Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Oct. 01, 2016	Oct. 25, 2016
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Oct. 01, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q3
Trading Symbol	DCO
Entity Registrant Name	DUCOMMUN INC /DE/
Entity Central Index Key	0000030305
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		11,173,659

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Oct. 01, 2016	Dec. 31, 2015
Current Assets
Cash and cash equivalents	$ 9,466	$ 5,454
Accounts receivable, net of allowance for doubtful accounts of $358 and $359 at October 1, 2016 and December 31, 2015, respectively	73,820	77,089
Inventories	129,769	115,404
Production cost of contracts	11,095	10,290
Other current assets	8,658	13,389
Assets held for sale	0	41,636
Total Current Assets	232,808	263,262
Property and equipment, net of accumulated depreciation of $138,333 and $128,533 at October 1, 2016 and December 31, 2015, respectively	98,586	96,551
Goodwill	82,554	82,554
Intangibles, net	103,835	110,621
Non-current deferred income taxes	212	324
Other assets	2,987	3,769
Total Assets	520,982	557,081
Current Liabilities
Current portion of long-term debt	5	26
Accounts payable	60,173	40,343
Accrued liabilities	30,510	36,458
Liabilities held for sale	0	6,780
Total Current Liabilities	90,688	83,607
Long-term debt, less current portion	176,618	240,661
Non-current deferred income taxes	25,871	26,528
Other long-term liabilities	16,763	18,954
Total Liabilities	309,940	369,750
Commitments and contingencies
Shareholders’ Equity
Common stock - $0.01 par value; 35,000,000 shares authorized; 11,173,659 and 11,084,318 issued at October 1, 2016 and December 31, 2015, respectively	112	111
Additional paid-in capital	76,681	75,200
Retained earnings	140,048	117,623
Accumulated other comprehensive loss	(5,799)	(5,603)
Total Shareholders’ Equity	211,042	187,331
Total Liabilities and Shareholders’ Equity	$ 520,982	$ 557,081

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Oct. 01, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 358	$ 359
Property and equipment, accumulated depreciation	$ 138,333	$ 128,533
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	35,000,000	35,000,000
Common stock, shares issued (in shares)	11,173,659	11,084,318

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015
Income Statement [Abstract]
Net Revenues	$ 132,571	$ 161,670	$ 408,156	$ 509,435
Cost of Sales	107,348	141,642	329,749	431,439
Gross Profit	25,223	20,028	78,407	77,996
Selling, General and Administrative Expenses	17,171	21,205	58,796	64,707
Operating Income (Loss)	8,052	(1,177)	19,611	13,289
Interest Expense	(1,945)	(3,392)	(6,279)	(16,499)
Loss on Extinguishment of Debt	0	(11,878)	0	(14,720)
Other Income	141	0	141	1,510
Gain on Divestitures	0	0	18,815	0
Income (Loss) Before Taxes	6,248	(16,447)	32,288	(16,420)
Income Tax Expense (Benefit)	1,234	(6,932)	9,863	(6,714)
Net Income (Loss)	$ 5,014	$ (9,515)	$ 22,425	$ (9,706)
Earnings (Loss) Per Share
Basic earnings (loss) per share (in dollars per share)	$ 0.45	$ (0.86)	$ 2.01	$ (0.88)
Diluted earnings (loss) per share (in dollars per share)	$ 0.44	$ (0.86)	$ 1.99	$ (0.88)
Weighted-Average Number of Common Shares Outstanding
Basic (in shares)	11,169	11,083	11,141	11,035
Diluted (in shares)	11,310	11,083	11,261	11,035

Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 5,014	$ (9,515)	$ 22,425	$ (9,706)
Other Comprehensive Income (Loss)
Amortization of actuarial losses and prior service costs, net of tax of $71 and $83 for the three months ended October 1, 2016 and October 3, 2015, respectively, and $212 and $248 for the nine months ended October 1, 2016 and October 3, 2015, respectively	120	139	360	417
Change in unrealized gains and losses on cash flow hedges, net of tax of zero for both the three months ended October 1, 2016 and October 3, 2015, and $326 and zero for the nine months ended October 1, 2016 and October 3, 2015, respectively	0	0	(556)	0
Other Comprehensive Income (Loss)	120	139	(196)	417
Comprehensive Income (Loss)	$ 5,134	$ (9,376)	$ 22,229	$ (9,289)

Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015
Statement of Comprehensive Income [Abstract]
Amortization of actuarial loss and prior service costs, tax benefits	$ 71	$ 83	$ 212	$ 248
Change in unrealized gains and losses on cash flow hedges, tax benefit	$ 0	$ 0	$ 326	$ 0

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015
Cash Flows from Operating Activities
Net Income (Loss)	$ 22,425	$ (9,706)
Adjustments to Reconcile Net Income (Loss) to Net Cash Provided by Operating Activities
Depreciation and amortization	17,420	20,064
Gain on divestitures	(18,815)	0
Stock-based compensation expense	2,579	2,792
Deferred income taxes	(1,602)	1,599
Excess tax benefits from stock-based compensation	(57)	(516)
Recovery of doubtful accounts	(26)	(11)
Noncash loss on extinguishment of debt	0	4,970
Other	(4,923)	7,180
Changes in Assets and Liabilities:
Accounts receivable	5,777	4,836
Inventories	(15,055)	5,525
Production cost of contracts	(1,437)	(560)
Other assets	7,095	1,614
Accounts payable	19,586	(7,626)
Accrued and other liabilities	(5,453)	(18,076)
Net Cash Provided by Operating Activities	27,514	12,085
Cash Flows from Investing Activities
Purchases of property and equipment	(12,712)	(11,803)
Proceeds from sale of assets	0	289
Insurance recoveries related to property and equipment	0	1,510
Proceeds from divestitures	55,272	0
Net Cash Provided by (Used in) Investing Activities	42,560	(10,004)
Cash Flows from Financing Activities
Borrowings from senior secured revolving credit facility	29,700	65,000
Repayments of senior secured revolving credit facility	(29,700)	(65,000)
Borrowings from term loans	0	275,000
Repayments of senior unsecured notes and term loans	(65,000)	(305,000)
Repayments of other debt	(22)	(17)
Debt issuance costs	0	(4,848)
Excess tax benefits from stock-based compensation	57	516
Net proceeds from issuance of common stock under stock plans	(1,097)	(1,118)
Net Cash Used in Financing Activities	(66,062)	(35,467)
Net Increase (Decrease) in Cash and Cash Equivalents	4,012	(33,386)
Cash and Cash Equivalents at Beginning of Period	5,454	45,627
Cash and Cash Equivalents at End of Period	$ 9,466	$ 12,241

Summary of Significant Accounting Policies

9 Months Ended

Oct. 01, 2016

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Description of Business

We are a leading global provider of engineering and manufacturing services for high-performance products and high-cost-of failure applications used primarily in the aerospace and defense (“A&D”), industrial, medical and other industries (collectively, “Industrial”). Our subsidiaries are organized into two strategic businesses: Electronic Systems segment and Structural Systems segment, each of which is a reportable operating segment. Electronic Systems designs, engineers and manufactures high-reliability products used in worldwide technology-driven markets including aerospace, defense, industrial and medical and other end-use markets. Electronic Systems’ product offerings range from prototype development to complex assemblies. Structural Systems designs, engineers and manufactures large, complex contoured aerospace structural components and assemblies and supplies composite and metal bonded structures and assemblies. Structural Systems’ products are used on commercial aircraft, military fixed-wing aircraft and military and commercial rotary-wing aircraft. All reportable operating segments follow the same accounting principles.

Basis of Presentation

The unaudited condensed consolidated financial statements include the accounts of Ducommun Incorporated and its subsidiaries (“Ducommun,” the “Company,” “we,” “us” or “our”), after eliminating intercompany balances and transactions. The December 31, 2015 condensed consolidated balance sheet data was derived from audited financial statements, but does not contain all disclosures required by accounting principles generally accepted in the United States of America (“GAAP”).

Our significant accounting policies were described in Part IV, Item 15(a)(1), “Note 1. Summary of Significant Accounting Policies” in our Annual Report on Form 10-K for the year ended December 31, 2015. We followed the same accounting policies for interim reporting. The financial information included in this Quarterly Report on Form 10-Q should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2015.

In the opinion of management, all adjustments, consisting of recurring accruals, have been made that are necessary to fairly state our condensed consolidated financial position, statements of income, comprehensive income and cash flows in accordance with GAAP for the periods covered by this Quarterly Report on Form 10-Q. The results of operations for the three and nine months ended October 1, 2016 are not necessarily indicative of the results to be expected for the full year ending December 31, 2016.

Our fiscal quarters typically end on the Saturday closest to the end of March, June and September for the first three fiscal quarters of each year, and ends on December 31 for our fourth fiscal quarter. As a result of using fiscal quarters for the first three quarters combined with leap years, our first and fourth fiscal quarters can range between 12 1/2 weeks to 13 1/2 weeks while the second and third fiscal quarters remain at a constant 13 weeks per fiscal quarter.

Certain reclassifications have been made to prior period amounts to conform to the current year’s presentation.

Use of Estimates

Certain amounts and disclosures included in the unaudited condensed consolidated financial statements required management to make estimates and judgments that affect the amounts of assets, liabilities (including forward loss reserves), revenues and expenses, and related disclosures of contingent assets and liabilities. These estimates are based on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates.

Supplemental Cash Flow Information



	(In thousands) Nine Months Ended
	October 1, 2016		October 3, 2015
Interest paid	$	5,283	$	24,066
Taxes paid	5,539		1,150
Non-cash activities:
Purchases of property and equipment not paid	687		957

Earnings (Loss) Per Share

Basic earnings (loss) per share are computed by dividing income (loss) available to common shareholders by the weighted-average number of common shares outstanding in each period. Diluted earnings per share are computed by dividing income available to common shareholders by the weighted-average number of common shares outstanding, plus any potential dilutive shares that could be issued if exercised or converted into common stock in each period.

The net income (loss), weighted-average number of common shares outstanding used to compute earnings (loss) per share, were as follows:



	(In thousands, except per share data) Three Months Ended					(In thousands, except per share data) Nine Months Ended
	October 1, 2016		October 3, 2015			October 1, 2016		October 3, 2015
Net income (loss)	$	5,014	$	(9,515	)	$	22,425	$	(9,706	)
Weighted-average number of common shares outstanding
Basic weighted-average common shares outstanding	11,169		11,083			11,141		11,035
Dilutive potential common shares	141		—			120		—
Diluted weighted-average common shares outstanding	11,310		11,083			11,261		11,035
Earnings (loss) per share
Basic	$	0.45	$	(0.86	)	$	2.01	$	(0.88	)
Diluted	$	0.44	$	(0.86	)	$	1.99	$	(0.88	)

Potentially dilutive stock options and stock units to purchase common stock, as shown below, were excluded from the computation of diluted earnings per share because their inclusion would have been anti-dilutive. However, these shares may be potentially dilutive common shares in the future.

(In thousands)

Three Months Ended

(In thousands)

Nine Months Ended

October 1,
2016

October 3,
2015

October 1,
2016

October 3,
2015

Stock options and stock units

515

885

617

902

Fair Value

Assets and liabilities that are measured, recorded or disclosed at fair value on a recurring basis are categorized using the fair value hierarchy. The fair value hierarchy has three levels based on the reliability of the inputs used to determine fair value. Level 1, the highest level, refers to the values determined based on quoted prices in active markets for identical assets. Level 2 refers to fair values estimated using significant observable inputs. Level 3, the lowest level, includes fair values estimated using significant unobservable inputs.

Cash and Cash Equivalents

Cash equivalents consist of highly liquid instruments purchased with original maturities of three months or less. Our cash accounts are not reduced for checks written until the checks are presented for payment and paid by our bank. These assets are valued at cost, which approximates fair value, which we classify as Level 1. See Fair Value above.

Derivative Instruments

We recognize derivative instruments on our consolidated balance sheets at their fair value. On the date that we enter into a derivative contract, we designate the derivative instrument as a fair value hedge, a cash flow hedge, a hedge of a net investment in a foreign operation, or a derivative instrument that will not be accounted for using hedge accounting methods. As of October 1, 2016, all of our derivative instruments were designated as cash flow hedges.

We record changes in the fair value of a derivative instrument that is highly effective and that is designated and qualifies as a cash flow hedge in other comprehensive income (loss), net of tax until our earnings are affected by the variability of cash flows of the underlying hedge. We record any hedge ineffectiveness and amounts excluded from effectiveness testing in current period earnings within interest expense. We report changes in the fair values of derivative instruments that are not designated or do not qualify for hedge accounting in current period earnings. We classify cash flows from derivative instruments on the consolidated statements of cash flows in the same category as the item being hedged or on a basis consistent with the nature of the instrument.

When we determine that a derivative instrument is not highly effective as a hedge, we discontinue hedge accounting prospectively. In all situations in which we discontinue hedge accounting and the derivative instrument remains outstanding, we will carry the derivative instrument at its fair value on our consolidated balance sheets and recognize subsequent changes in its fair value in our current period earnings.

Inventories

Inventories are stated at the lower of cost or market with cost being determined using a moving average cost basis for raw materials and actual cost for work-in-process and finished goods, with units being relieved and charged to cost of sales on a first-in, first-out basis. Market value for raw materials is based on replacement cost and for other inventory classifications it is based on net realizable value. Inventoried costs include raw materials, outside processing, direct labor and allocated overhead, adjusted for any abnormal amounts of idle facility expense, freight, handling costs, and wasted materials (spoilage) incurred. Costs under long-term contracts are accumulated into, and removed from, inventory on the same basis as other contracts. We assess the inventory carrying value and reduce it, if necessary, to its net realizable value based on customer orders on hand, and internal demand forecasts using management’s best estimates given information currently available. We maintain a reserve for potentially excess and obsolete inventories and inventories that are carried at costs that are higher than their estimated net realizable values.

Production Cost of Contracts

Production cost of contracts includes non-recurring production costs, such as design and engineering costs, and tooling and other special-purpose machinery necessary to build parts as specified in a contract. Production costs of contracts are recorded to cost of goods sold using the units of delivery method. We review the value of the production cost of contracts on a quarterly basis to ensure when added to the estimated cost to complete, the value is not greater than the estimated realizable value of the related contracts.

Assets Held For Sale

In the fourth quarter of 2015, we made the decision to sell our Huntsville, Alabama and Iuka, Mississippi (collectively, “Miltec”) operations and our Pittsburgh, Pennsylvania operation, both of which were part of our Electronic Systems operating segment, and as a result, we met the criteria for assets held for sale. However, the proposed sale of these two operations did not represent a strategic shift in our business and thus, were included in the ongoing operating results in the consolidated statements of operations for all periods presented.

On January 22, 2016, we entered into an agreement, and completed the sale on the same date, to sell our operation located in Pittsburgh, Pennsylvania for a final sales price of $38.5 million in cash. We divested this facility as part of our overall strategy to streamline operations, which includes consolidating our footprint. Net assets sold were $24.0 million, net liabilities sold were $4.0 million, and direct transaction costs incurred were $0.2 million, resulting in a gain on divestiture of $18.3 million.

In February 2016, we entered into an agreement to sell our Miltec operation for a preliminary sales price of $14.6 million, in cash, subject to post-closing adjustments. We divested this facility as part of our overall strategy to streamline operations, which includes consolidating our footprint. We completed the sale on March 25, 2016. Preliminary net assets sold were $15.4 million, net liabilities sold were $2.6 million, and direct transaction costs incurred during the current period were $1.3 million, resulting in a gain on divestiture of $0.5 million.

The carrying values of the major classes of assets and liabilities related to these assets held for sale were as follows:



	(In thousands)
	October 1, 2016		December 31, 2015
Assets
Accounts receivable (less allowance for doubtful accounts of zero and $24 at October 1, 2016 and December 31, 2015, respectively)	$	—	$	9,395
Inventory	—		6,453
Deferred income taxes	—		1,246
Other current assets	—		3,315
Total current assets	—		20,409
Property and equipment, net of accumulated depreciation of zero and $8,509 at October 1, 2016 and December 31, 2015, respectively	—		1,941
Goodwill	—		17,772
Other intangible assets	—		1,514
	$	—	$	41,636
Liabilities
Accounts payable	$	—	$	4,836
Accrued liabilities	—		1,944
	$	—	$	6,780

Accumulated Other Comprehensive Loss

Accumulated other comprehensive loss, as reflected in the condensed consolidated balance sheets under the equity section, was comprised of cumulative pension and retirement liability adjustments and changes in the fair value, net of tax, of a derivative instrument that is highly effective and that is designated and qualifies as a cash flow hedge.

Provision for Estimated Losses on Contracts

We record provisions for the total anticipated losses on contracts considering total estimated costs to complete the contract compared to total anticipated revenues in the period in which such losses are identified. The provisions for estimated losses on contracts require us to make certain estimates and assumptions, including those with respect to the future revenue under a contract and the future cost to complete the contract. Our estimate of the future cost to complete a contract may include assumptions as to improvements in manufacturing efficiency, reductions in operating and material costs, and our ability to resolve claims and assertions with our customers. If any of these or other assumptions and estimates do not materialize in the future, we may be required to record additional provisions for estimated losses on contracts.

Recent Accounting Pronouncements

New Accounting Guidance Adopted in 2016

In August 2015, the FASB issued ASU 2015-15, “Imputation of Interest (Subtopic 835-30)” (“ASU 2015-15”), which provides guidance on the presentation and subsequent measurement of debt issuance costs associated with line-of-credit arrangements. Other guidance does not address presentation or subsequent measurement of debt issuance costs related to line-of-credit arrangements. Thus, the SEC staff would not object to an entity deferring and presenting debt issuance costs as an asset and subsequently amortizing the deferred debt issuance costs ratably over the term of the line-of-credit arrangement, regardless of whether there are any outstanding borrowings on the line-of-credit arrangement. The new guidance was effective for us beginning January 1, 2016. We did not have debt issuance costs associated with line-of-credit arrangements and thus, the adoption of this new guidance did not have a significant impact on our condensed consolidated financial statements.

In June 2015, the FASB issued ASU 2015-10, “Technical Corrections and Improvements” (“ASU 2015-10”), which covers a wide range of Topics in the Codification. The amendments in ASU 2015-10 represent changes to make minor corrections or minor improvements to the Codification that are not expected to have a significant effect on current accounting practice or create a significant administrative cost on most entities. The amendments in this new guidance that require transition guidance were effective for us beginning January 1, 2016. The adoption of this standard did not have a significant impact on our condensed consolidated financial statements.

In April 2015, the FASB issued ASU 2015-05, “Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement” (“ASU 2015-05”), which provides guidance on fees paid by a customer in a cloud computing arrangement. If a cloud computing arrangement includes a software license, the customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. The new guidance was effective for us beginning January 1, 2016. The adoption of this standard did not have a significant impact on our condensed consolidated financial statements.

In April 2015, the FASB issued ASU 2015-03, “Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs” (“ASU 2015-03”), which changes the presentation of debt issuance costs in financial statements. Under ASU 2015-03, an entity presents such costs in the balance sheet as a direct deduction from the related debt liability rather than as an asset. Amortization of those costs is reported as interest expense. The new guidance was effective for us beginning January 1, 2016. As a result of the adoption of this new guidance, we reclassed $3.4 million of debt issuance costs against $180.0 million of total debt as of October 1, 2016.

In January 2015, the FASB issued ASU 2015-01, “Income Statement - Extraordinary and Unusual Items (Subtopic 225-20)” (“ASU 2015-01”), which eliminates from U.S. GAAP the concept of extraordinary items. Current guidance requires separate classification, presentation, and disclosure of extraordinary events and transactions. In addition, an event or transaction is presumed to be an ordinary and usual activity of the reporting entity unless evidence clearly supports its classification as an extraordinary item. The new guidance was effective for us beginning January 1, 2016. The adoption of this standard did not have a significant impact on our condensed consolidated financial statements.

In June 2014, the FASB issued ASU 2014-12, “Compensation - Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide that a Performance Target Could be Achieved after the Requisite Service Period” (“ASU 2014-12”), which requires that a performance target that affects vesting, and that could be achieved after the requisite service period, be treated as a performance condition. Thus, the performance target should not be reflected in estimating the grant date fair value of the award. This update further clarifies that compensation cost should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the period(s) for which the requisite service has already been rendered. The new guidance was effective for us beginning January 1, 2016. The adoption of this standard did not have a significant impact on our condensed consolidated financial statements.

Recently Issued Accounting Standards

In August 2016, the FASB issued ASU 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments” (“ASU 2016-15”), which addresses the following eight specific cash flow issues: Debt prepayment or debt extinguishment costs; settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing; contingent consideration payments made after a business combination; proceeds from the settlement of insurance claims; proceeds from the settlement of corporate-owned life insurance policies (“COLIs”) (including bank-owned life insurance policies [“BOLIs”]); distributions received from equity method investees; beneficial interests in securitization transactions; and separately identifiable cash flows and application of the predominance principle. The new guidance is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods, which will be our interim period beginning January 1, 2018. We are evaluating the impact of this standard.

In May 2016, the FASB issued ASU 2016-12, “Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients” (“ASU 2016-12”), which amends the guidance in the new revenue standard on collectability, noncash consideration, presentation of sales tax, and transition. The amendments are intended to address implementation issues and provide additional practical expedients to reduce the cost and complexity of applying the new revenue standard. The new guidance is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods, which will be our interim period beginning January 1, 2018. Early adoption is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods with that reporting period. We are evaluating the impact of this standard.

In May 2016, the FASB issued ASU 2016-11, “Revenue Recognition (Topic 605) and Derivatives and Hedging (Topic 815): Rescission of SEC Guidance Because of Accounting Standards Updates 2014-09 and 2014-06 Pursuant to Staff Announcements at the March 3, 2016 EITF Meeting” (“ASU 2016-11”), which clarifies revenue and expense recognition for freight costs, accounting for shipping and handling fees and costs, and accounting for consideration given by a vendor to a customer. The new guidance is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods, which will be our interim period beginning January 1, 2018. Early adoption is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods with that reporting period. We are evaluating the impact of this standard.

In April 2016, the FASB issued ASU 2016-10, “Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing” (“ASU 2016-10”), which clarifies the following two aspects of Topic 606: (a) identifying performance obligations; and (b) the licensing implementation guidance. The amendments do not change the core principle of the guidance in Topic 606. The new guidance is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods, which will be our interim period beginning January 1, 2018. Early adoption is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods with that reporting period. We are evaluating the impact of this standard.

In March 2016, the FASB issued ASU 2016-09, “Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting” (“ASU 2016-09”), which is intended to improve the accounting for employee share-based payments. The new guidance is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years, which will be our interim period beginning January 1, 2017. Early adoption is permitted in any interim or annual reporting period. We are evaluating the impact of this standard and currently do not anticipate it will have a significant impact on our condensed consolidated financial statements.

In March 2016, the FASB issued ASU 2016-05, “Derivatives and Hedging (Topic 815): Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships” (“ASU 2016-05”), which clarifies that a change in the counter party to a derivative instrument designated as a hedging instrument does not require dedesignation of that hedging relationship, provided that all other hedge accounting criteria are met. The new guidance is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years, which will be our interim period beginning January 1, 2017. Early adoption is permitted as of the beginning of an interim period on a modified retrospective basis. We are evaluating the impact of this standard and currently do not anticipate it will have a significant impact on our condensed consolidated financial statements.

In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842)” (“ASU 2016-02”), which requires lessees to present right-of-use assets and lease liabilities on the balance sheet. Lessees are required to apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The new guidance is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, which will be our interim period beginning January 1, 2019. We are evaluating the impact of this standard and currently anticipate it will impact our condensed consolidated financial statements.

In July 2015, the FASB issued ASU 2015-11, “Inventory (Topic 330)” (“ASU 2015-11”), which requires inventory within the scope of ASU 2015-11 to be measured at the lower of cost and net realizable value. Subsequent measurement is unchanged for inventory measured using last-in, first-out (“LIFO”) or the retail inventory value. The new guidance is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years, which will be our interim period beginning January 1, 2017. Early adoption is permitted as of the beginning of an interim or annual reporting period. We are evaluating the impact of this standard, but currently do not anticipate it will have a significant impact on our condensed consolidated financial statements.

In August 2014, the FASB issued ASU 2014-15, “Presentation of Financial Statements - Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern” (“ASU 2014-15”), which defines management’s responsibility to evaluate whether there is substantial doubt about a company’s ability to continue as a going concern. ASU 2014-15 also provide principles and definitions that are intended to reduce diversity in the timing and content of disclosures in the financial statement footnotes. The new guidance is effective for annual periods ending after December 15, 2016, which will be our year ending December 31, 2016, and interim periods beginning after December 15, 2016, which will be our interim period beginning January 1, 2017. Early adoption is permitted. We are evaluating the impact of this standard and currently do not anticipate it will have a significant impact on our condensed consolidated financial statements.

In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09”), which outlines a new, single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. This new revenue recognition model provides a five-step analysis in determining when and how revenue is recognized. It requires entities to exercise judgment when considering the terms of the contract(s) which include (i) identifying the contract(s) with the customer, (ii) identifying the separate performance obligations in the contract, (iii) determining the transaction price, (iv) allocating the transaction price to the separate performance obligations, and (v) recognizing revenue when each performance obligation is satisfied. Thus, it depicts the transfer of promised goods or services to customers in an amount that reflects the consideration an entity expects to receive in exchange for those goods or services. Companies have the option of applying the provisions of ASU 2014-09 either retrospectively to each prior reporting period presented or retrospectively with the cumulative effect of initially applying this guidance recognized at the date of initial application. In August 2015, the FASB issued ASU 2015-14, “Revenue From Contracts With Customers (Topic 606)” (“ASU 2015-14”), which defer the effective date of ASU 2014-09 by one year to annual periods beginning after December 15, 2017, including interim reporting periods within that reporting period. Early adoption is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. The new guidance is effective for us beginning January 1, 2018 and will provide us additional time to evaluate the method and impact that ASU 2014-09 will have on our condensed consolidated financial statements. We are evaluating the impact of this standard, and with the percentage of completion, unit of delivery method of recognizing revenue being eliminated under ASU 2014-09, we currently anticipate our revenue, cost of sales, and related items on our condensed consolidated financial statements will be impacted.

Restructuring Activities

9 Months Ended

Oct. 01, 2016

Restructuring and Related Activities [Abstract]

Restructuring Activities

Summary of 2015 Restructuring Plans

In September 2015, management approved and commenced implementation of several restructuring actions, including organizational re-alignment, consolidation and relocation of the New York facilities that was completed in December 2015, closure of the Houston facility that was completed in December 2015, and closure of the St. Louis facility that was completed in April 2016, all of which are part of our overall strategy to streamline operations. We have recorded cumulative expenses of $2.2 million for severance and benefits and loss on early exit from leases. We do not expect to record additional expenses related to these restructuring plans.

As of October 1, 2016, we have accrued $0.1 million for severance and benefits and early exit from lease in the Electronic Systems segment and $0.6 million for severance and benefits and loss on early exit from lease in the Structural Systems segment, all of which were charged to selling, general and administrative expenses.

Summary of 2016 Restructuring Plan

In May 2016, management approved and commenced implementation of the closure of one of our Tulsa facilities that was completed in June 2016, and is part of our overall strategy to streamline operations. We have recorded cumulative expenses of $0.2 million for severance and benefits and loss on early exit from a lease. We do not expect to record additional expenses related to this restructuring plan.

As of October 1, 2016, we have accrued $0.1 million for loss on early exit from lease in the Electronic Systems segment, all of which were charged to selling, general and administrative expenses.

Our restructuring activities in the nine months ended October 1, 2016 were as follows (in thousands):



	December 31, 2015		Nine Months Ended October 1, 2016							October 1, 2016
	Balance		Charges		Cash Payments			Change in Estimates		Balance
Severance and benefits	$	722	$	49	$	(766	)	$	—	$	5
Lease termination	1,181		133		(574		)	—		740
Ending balance	$	1,903	$	182	$	(1,340	)	$	—	$	745

Fair Value Measurements

9 Months Ended

Oct. 01, 2016

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair value is defined as the price that would be received for an asset or the price that would be paid to transfer a liability (an exit price) in the principal or most advantageous market in an orderly transaction between market participants on the measurement date. The accounting standard provides a framework for measuring fair value using a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. This hierarchy requires us to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Three levels of inputs that may be used to measure fair value are as follows:

Level 1 - Quoted prices (unadjusted) in active markets for identical assets or liabilities;

Level 2 - Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities; and

Level 3 - Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

Our financial instruments consist primarily of cash and cash equivalents and interest rate cap derivatives designated as cash flow hedging instruments. Assets and liabilities measured at fair value on a recurring basis were as follows (in thousands):



	As of October 1, 2016								As of December 31, 2015
	Fair Value Measurements Using								Fair Value Measurements Using
	Level 1		Level 2		Level 3		Total Balance		Level 1		Level 2		Level 3		Total Balance
Assets
Money market funds⁽¹⁾	$	6,455	$	—	$	—	$	6,455	$	4,587	$	—	$	—	$	4,587
Interest rate cap hedges⁽²⁾	—		151		—		151		—		963		—		963
Total Assets	$	6,455	$	151	$	—	$	6,606	$	4,587	$	963	$	—	$	5,550

(1) Included as cash and cash equivalents.

(2) Interest rate cap hedge premium included as other current assets and other assets.

The fair value of the interest rate cap hedge agreements was determined using pricing models that use observable market inputs as of the balance sheet date, a Level 2 measurement.

There were no transfers between Level 1, Level 2, or Level 3 financial instruments in the three months ended October 1, 2016.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Financial Instruments

9 Months Ended

Oct. 01, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Financial Instruments

Derivative Instruments and Hedging Activities

We periodically enter into cash flow derivative transactions, such as interest rate cap agreements, to hedge exposure to various risks related to interest rates. We assess the effectiveness of the interest rate cap hedges at inception of the hedge. We recognize all derivatives at their fair value. For cash flow designated hedges, the effective portion of the changes in fair value of the derivative contract are recorded in accumulated other comprehensive income (loss), net of taxes, and are recognized in net earnings at the time earnings are affected by the hedged transaction. Adjustments to record changes in fair values of the derivative contracts that are attributable to the ineffective portion of the hedges, if any, are recognized in earnings. We present derivative instruments in our consolidated statements of cash flows’ operating, investing, or financing activities consistent with the cash flows of the hedged item.

Our interest rate cap hedges were designated as cash flow hedges and deemed highly effective at the inception of the hedges. These interest rate cap hedges mature concurrently with the term loan in June 2020. During the three months ended October 1, 2016, the interest rate cap hedges continued to be highly effective and less than $0.1 million, net of tax, was recognized in other comprehensive income. No amount was recorded in the condensed consolidated statements of operations during the three months ended October 1, 2016. See Note 8.

The recorded fair value of the derivative financial instruments in the consolidated balance sheets were as follows:



	(In thousands) October 1, 2016				(In thousands) December 31, 2015
	Other Current Assets		Other Long Term Assets		Other Current Assets		Other Long Term Assets
Derivatives Designated as Hedging Instruments
Cash Flow Hedges:
Interest rate cap premiums	$	—	$	151	$	1	$	962

Total Derivatives	$	—	$	151	$	1	$	962

- Definition

The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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+ Details

Inventories

9 Months Ended

Oct. 01, 2016

Inventory Disclosure [Abstract]

Inventories

Inventories consisted of the following:



	(In thousands)
	October 1, 2016		December 31, 2015
Raw materials and supplies	$	68,688	$	61,840
Work in process	61,641		49,299
Finished goods	7,783		10,073
	138,112		121,212
Less progress payments	8,343		5,808
Total	$	129,769	$	115,404

We net advances from customers related to inventory purchases against inventories in the consolidated balance sheets.

Goodwill	9 Months Ended
Goodwill	Oct. 01, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	Goodwill Gross goodwill and accumulated goodwill impairment were $164.3 million and $81.7 million, respectively, both as of October 1, 2016 and December 31, 2015. The goodwill is included in our Electronic Systems segment. We perform our annual goodwill impairment test during the fourth quarter. If certain factors occur, we may have to perform an impairment test prior to the fourth quarter including significant under performance of our business relative to expected operating results, significant adverse economic and industry trends, significant decline in our market capitalization for an extended period of time relative to net book value, a decision to divest individual businesses within a reporting unit, or a decision to group individual businesses differently. At times, our market capitalization had declined below book value, which if it continues for an extended period of time, is a factor that could lead to a conclusion that a triggering event has occurred. As our market capitalization declines recently have been temporary in nature and our market capitalization has exceeded our book value, we do not consider these temporary declines in market capitalization to be a triggering event in the fiscal quarter ended October 1, 2016. However, it is considered at least reasonably possible that our determination that goodwill for our Electronic Systems segment was not impaired could change in the near term if any the factors noted above occurs.

Accrued Liabilities

9 Months Ended

Oct. 01, 2016

Payables and Accruals [Abstract]

Accrued Liabilities

The components of accrued liabilities were as follows:



	(In thousands)
	October 1, 2016		December 31, 2015
Accrued compensation	$	17,568	$	13,521
Accrued income tax and sales tax	1,096		1,513
Customer deposits	2,512		1,758
Interest payable	209		58
Provision for forward loss reserves	6,258		11,925
Other	2,867		7,683
Total	$	30,510	$	36,458

Long-Term Debt

9 Months Ended

Oct. 01, 2016

Debt Disclosure [Abstract]

Long-Term Debt

Long-term debt and the current period interest rates were as follows:



	(In thousands)
	October 1, 2016			December 31, 2015
New term loan	$	180,000		$	245,000
New revolving credit facility	—			—
Other debt (fixed 5.41%)	5			26
Total debt	180,005			245,026
Less current portion	5			26
Total long-term debt	180,000			245,000
Less debt issuance costs	3,382			4,339
Total long-term debt, net of debt issuance costs	$	176,618		$	240,661
Weighted-average interest rate	3.35		%	3.07		%

In June 2015, we completed a new credit facility to replace the Existing Credit Facilities. The new credit facility consisted of a $275.0 million senior secured term loan, which matures on June 26, 2020 (“New Term Loan”), and a $200.0 million senior secured revolving credit facility (“New Revolving Credit Facility”), which matures on June 26, 2020 (collectively, the “New Credit Facilities”). The New Credit Facilities bear interest, at our option, at a rate equal to either (i) the Eurodollar Rate (defined as LIBOR) plus an applicable margin ranging from 1.50% to 2.75% per year or (ii) the Base Rate (defined as the highest of [a] Federal Funds Rate plus 0.50%, [b] Bank of America’s prime rate, and [c] the Eurodollar Rate plus 1.00%) plus an applicable margin ranging from 0.50% to 1.75% per year, in each case based upon the consolidated total net adjusted leverage ratio. The undrawn portions of the commitments of the New Credit Facilities are subject to a commitment fee ranging from 0.175% to 0.300%, based upon the consolidated total net adjusted leverage ratio.

Further, we are required to make mandatory prepayments of amounts outstanding under the New Term Loan. The mandatory prepayments will be made quarterly, equal to 5.0% per year of the original aggregate principal amount during the first two years and increase to 7.5% per year during the third year, and increase to 10.0% per year during the fourth year and fifth years, with the remaining balance payable on June 26, 2020. The loans under the New Revolving Credit Facility are due on June 26, 2020. As of October 1, 2016, we were in compliance with all covenants required under the New Credit Facilities.

We have been making voluntary principal prepayments on a quarterly basis on our senior secured term loan and in conjunction with the closing of the New Credit Facilities in second quarter 2015, we drew down $65.0 million on the New Revolving Credit Facility and used those proceeds along with current cash on hand to extinguish the existing senior secured term loan of $80.0 million. We expensed the unamortized debt issuance costs related to the existing senior secured term loan of $2.8 million as part of extinguishing the existing senior secured term loan in second quarter 2015. We also incurred $4.8 million of debt issuance costs related to the New Credit Facilities and those costs were capitalized and are being amortized over the five year life of the New Credit Facilities.

In addition, we retired all of the $200.0 million senior unsecured notes (“Existing Notes”) in July 2015. We drew down on the New Term Loan in the amount of $275.0 million. Along with the call notice amount and paying the call premium of $9.8 million, we also paid down the $65.0 million outstanding on the New Revolving Credit Facility. We expensed the call premium of $9.8 million and debt issuance costs related to the Existing Notes of $2.1 million upon extinguishing the Existing Notes in July 2015.

Further, we made net voluntary principal prepayments of $10.0 million and $65.0 million under the New Credit Facilities during the three and nine months ended October 1, 2016, respectively.

As of October 1, 2016, we had $198.5 million of unused borrowing capacity under the New Revolving Credit Facility, after deducting $1.5 million for standby letters of credit.

The New Credit Facilities were entered into by us (“Parent Company”) and guaranteed by all of our subsidiaries, other than one subsidiary (“Subsidiary Guarantors”) that was considered minor. The Parent Company has no independent assets or operations and the Subsidiary Guarantors jointly and severally guarantee, on a senior unsecured basis, the New Credit Facilities. Therefore, no condensed consolidating financial information for the Parent Company and its subsidiaries are presented.

In October 2015, we entered into interest rate cap hedges designated as cash flow hedges with maturity dates of June 2020, and in aggregate, totaling $135.0 million of our debt. We paid a total of $1.0 million in connection with entering into the interest rate cap hedges. See Note 4 for further discussion.

Shareholders' Equity	9 Months Ended
Shareholders' Equity	Oct. 01, 2016
Equity [Abstract]
Shareholders' Equity	Shareholders’ Equity We are authorized to issue five million shares of preferred stock. At October 1, 2016 and December 31, 2015, no preferred shares were issued or outstanding.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Employee Benefit Plans

9 Months Ended

Oct. 01, 2016

Compensation and Retirement Disclosure [Abstract]

Employee Benefit Plans

The components of net periodic pension expense were as follows:



	(In thousands)						(In thousands)
	Three Months Ended						Nine Months Ended
	October 1, 2016			October 3, 2015			October 1, 2016			October 3, 2015
Service cost	$	133		$	196		$	399		$	589
Interest cost	341			338			1,025			1,013
Expected return on plan assets	(370		)	(374		)	(1,111		)	(1,121		)
Amortization of actuarial losses	191			222			572			665
Net periodic pension cost	$	295		$	382		$	885		$	1,146

The components of the reclassifications of net actuarial losses from accumulated other comprehensive loss to net income for the three and nine months ended October 1, 2016 were as follows:



	(In thousands)
	Three Months Ended			Nine Months Ended
	October 1, 2016			October 1, 2016
Amortization of actuarial losses - total before tax ⁽¹⁾	$	(191	)	$	(572	)
Tax benefit	71			212
Net of tax	$	(120	)	$	(360	)


(1)	The amortization expense is included in the computation of periodic pension cost and is a decrease to net income upon reclassification from accumulated other comprehensive loss.

Indemnifications	9 Months Ended
Indemnifications	Oct. 01, 2016
Disclosure of Guarantees and Indemnifications [Abstract]
Indemnifications	Indemnifications We have made guarantees and indemnities under which we may be required to make payments to a guaranteed or indemnified party, in relation to certain transactions, including revenue transactions in the ordinary course of business. In connection with certain facility leases, we have indemnified our lessors for certain claims arising from the facility or the lease. We indemnify our directors and officers to the maximum extent permitted under the laws of the State of Delaware. However, we have a directors and officers insurance policy that may reduce our exposure in certain circumstances and may enable us to recover a portion of future amounts that may be payable, if any. The duration of the guarantees and indemnities varies and, in many cases is indefinite but subject to statute of limitations. The majority of guarantees and indemnities do not provide any limitations of the maximum potential future payments we could be obligated to make. Historically, payments related to these guarantees and indemnities have been immaterial. We estimate the fair value of our indemnification obligations as insignificant based on this history and insurance coverage and have, therefore, not recorded any liability for these guarantees and indemnities in the accompanying condensed consolidated balance sheets.

Income Taxes	9 Months Ended
Income Taxes	Oct. 01, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The provision for income taxes is determined using an estimated annual effective tax rate, which is generally less than the U.S. federal statutory rate, primarily due to research and development (“R&D”) tax credits and deductions available for domestic production activities. Our effective tax rate may be subject to fluctuations during the year as new information is obtained, which may affect the assumptions used to estimate the annual effective tax rate, including factors such as expected utilization of R&D tax credits, valuation allowances against deferred tax assets, the recognition or derecognition of tax benefits related to uncertain tax positions, and changes in or the interpretation of tax laws in jurisdictions where we conduct business. We recognize deferred tax assets and liabilities for temporary differences between the financial reporting basis and the tax basis of our assets and liabilities along with net operating loss and tax credit carryovers. We record a valuation allowance against our deferred tax assets to reduce the net carrying value to an amount that we believe is more likely than not to be realized. When we establish or reduce our valuation allowances against our deferred tax assets, the provision for income taxes will increase or decrease, respectively, in the period when that determination is made. We recorded income tax expense of $1.2 million (effective tax rate of 19.8%) for the three months ended October 1, 2016 compared to an income tax benefit of $(6.9) million (effective tax benefit rate of (42.1)%) for the three months ended October 3, 2015. The increase in the effective tax rate for the three months ended October 1, 2016 compared to the three months ended October 3, 2015 was primarily due to pre-tax income in the current three month period compared to a pre-tax loss in the prior year three month period. The increase was partially offset by the U.S. Federal research and development tax credit that was permanently extended in the fourth quarter of 2015 and the deduction for Qualified Domestic Production Activities. We recorded income tax expense of $9.9 million (effective tax rate of 30.5%) for the nine months ended October 1, 2016 compared to an income tax benefit of $(6.7) million (effective tax benefit rate of (40.9)%) for the nine months ended October 3, 2015. The increase in the effective tax rate for the nine months ended October 1, 2016 compared to the nine months ended October 3, 2015 was primarily due to pre-tax income in the current nine month period which included gain on divestitures of our Pittsburgh and Miltec operations of $18.8 million compared to a pre-tax loss in the prior year nine month period. The increase was partially offset by the U.S. Federal research and development tax credit that was permanently extended in the fourth quarter of 2015 and the deduction for Qualified Domestic Production Activities. Our unrecognized tax benefits were $2.9 million and $3.0 million as of October 1, 2016 and December 31, 2015, respectively. $2.0 million, if recognized, would affect the annual income tax rate. We do not anticipate any significant increases or decreases to our unrecognized tax benefits in the next twelve months. During the three months ended October 1, 2016, the Internal Revenue Service (“IRS”) commenced an audit of our 2014 tax year. We believe we have adequately accrued for tax deficiencies or reductions in tax benefits, if any, that could result from the examination and all open audit years.

Contingencies	9 Months Ended
Contingencies	Oct. 01, 2016
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies Structural Systems has been directed by California environmental agencies to investigate and take corrective action for groundwater contamination at its facilities located in El Mirage and Monrovia, California. Based on currently available information, Ducommun has established an accrual for its estimated liability for such investigation and corrective action of $1.5 million at both October 1, 2016 and December 31, 2015, which is reflected in other long-term liabilities on its condensed consolidated balance sheets. Structural Systems also faces liability as a potentially responsible party for hazardous waste disposed at landfills located in Casmalia and West Covina, California. Structural Systems and other companies and government entities have entered into consent decrees with respect to these landfills with the United States Environmental Protection Agency and/or California environmental agencies under which certain investigation, remediation and maintenance activities are being performed. Based on currently available information, Ducommun preliminarily estimates that the range of its future liabilities in connection with the landfill located in West Covina, California is between $0.4 million and $3.1 million. Ducommun has established an accrual for its estimated liability, in connection with the West Covina landfill of $0.4 million at October 1, 2016, which is reflected in other long-term liabilities on its consolidated balance sheet. Ducommun’s ultimate liability in connection with these matters will depend upon a number of factors, including changes in existing laws and regulations, the design and cost of construction, operation and maintenance activities, and the allocation of liability among potentially responsible parties. In the normal course of business, Ducommun and its subsidiaries are defendants in certain other litigation, claims and inquiries, including matters relating to environmental laws. In addition, Ducommun makes various commitments and incurs contingent liabilities. While it is not feasible to predict the outcome of these matters, Ducommun does not presently expect that any sum it may be required to pay in connection with these matters would have a material adverse effect on its condensed consolidated financial position, results of operations or cash flows.

Business Segment Information

9 Months Ended

Oct. 01, 2016

Segment Reporting [Abstract]

Business Segment Information

We supply products and services primarily to the aerospace and defense industries. Our subsidiaries are organized into two strategic businesses, Structural Systems and Electronic Systems, each of which is a reportable operating segment.

Financial information by reportable operating segment was as follows:



	(In thousands) Three Months Ended						(In thousands) Nine Months Ended
	October 1, 2016			October 3, 2015			October 1, 2016			October 3, 2015
Net Revenues
Structural Systems	$	60,931		$	64,170		$	185,642		$	212,306
Electronic Systems	71,640			97,500			222,514			297,129
Total Net Revenues	$	132,571		$	161,670		$	408,156		$	509,435
Segment Operating Income
Structural Systems	$	5,893		$	(6,028	)	$	13,347		$	2,980
Electronic Systems	6,600			8,598			19,769			22,575
	12,493			2,570			33,116			25,555
Corporate General and Administrative Expenses ⁽¹⁾	(4,441		)	(3,747		)	(13,505		)	(12,266		)
Operating Income	$	8,052		$	(1,177	)	$	19,611		$	13,289
Depreciation and Amortization Expenses
Structural Systems	$	2,851		$	2,386		$	6,683		$	7,009
Electronic Systems	3,232			4,207			10,661			12,928
Corporate Administration	6			42			76			127
Total Depreciation and Amortization Expenses	$	6,089		$	6,635		$	17,420		$	20,064
Capital Expenditures
Structural Systems	$	3,555		$	2,329		$	10,149		$	8,080
Electronic Systems	947			758			1,701			3,196
Corporate Administration	—			4			—			10
Total Capital Expenditures	$	4,502		$	3,091		$	11,850		$	11,286


(1)	Includes costs not allocated to either the Structural Systems or Electronic Systems operating segments.

Segment assets include assets directly identifiable with each segment. Our segment assets are as follows:



	(In thousands)
	October 1, 2016		December 31, 2015
Total Assets
Structural Systems	$	177,831	$	179,134
Electronic Systems	329,606		363,227
Corporate Administration ⁽¹⁾	13,545		14,720
Total Assets	$	520,982	$	557,081
Goodwill and Intangibles
Structural Systems	$	4,025	$	4,866
Electronic Systems	182,364		207,595
Total Goodwill and Intangibles	$	186,389	$	212,461


(1)	Includes assets not specifically identified to either the Structural Systems or Electronic Systems operating segments, including cash.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

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+ Details

Summary of Significant Accounting Policies (Policies)	9 Months Ended
Summary of Significant Accounting Policies (Policies)	Oct. 01, 2016
Accounting Policies [Abstract]
Description of Business	Description of Business We are a leading global provider of engineering and manufacturing services for high-performance products and high-cost-of failure applications used primarily in the aerospace and defense (“A&D”), industrial, medical and other industries (collectively, “Industrial”). Our subsidiaries are organized into two strategic businesses: Electronic Systems segment and Structural Systems segment, each of which is a reportable operating segment. Electronic Systems designs, engineers and manufactures high-reliability products used in worldwide technology-driven markets including aerospace, defense, industrial and medical and other end-use markets. Electronic Systems’ product offerings range from prototype development to complex assemblies. Structural Systems designs, engineers and manufactures large, complex contoured aerospace structural components and assemblies and supplies composite and metal bonded structures and assemblies. Structural Systems’ products are used on commercial aircraft, military fixed-wing aircraft and military and commercial rotary-wing aircraft. All reportable operating segments follow the same accounting principles.
Basis of Presentation	Basis of Presentation The unaudited condensed consolidated financial statements include the accounts of Ducommun Incorporated and its subsidiaries (“Ducommun,” the “Company,” “we,” “us” or “our”), after eliminating intercompany balances and transactions. The December 31, 2015 condensed consolidated balance sheet data was derived from audited financial statements, but does not contain all disclosures required by accounting principles generally accepted in the United States of America (“GAAP”). Our significant accounting policies were described in Part IV, Item 15(a)(1), “Note 1. Summary of Significant Accounting Policies” in our Annual Report on Form 10-K for the year ended December 31, 2015. We followed the same accounting policies for interim reporting. The financial information included in this Quarterly Report on Form 10-Q should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2015. In the opinion of management, all adjustments, consisting of recurring accruals, have been made that are necessary to fairly state our condensed consolidated financial position, statements of income, comprehensive income and cash flows in accordance with GAAP for the periods covered by this Quarterly Report on Form 10-Q. The results of operations for the three and nine months ended October 1, 2016 are not necessarily indicative of the results to be expected for the full year ending December 31, 2016. Our fiscal quarters typically end on the Saturday closest to the end of March, June and September for the first three fiscal quarters of each year, and ends on December 31 for our fourth fiscal quarter. As a result of using fiscal quarters for the first three quarters combined with leap years, our first and fourth fiscal quarters can range between 12 1/2 weeks to 13 1/2 weeks while the second and third fiscal quarters remain at a constant 13 weeks per fiscal quarter. Certain reclassifications have been made to prior period amounts to conform to the current year’s presentation.
Use of Estimates	Use of Estimates Certain amounts and disclosures included in the unaudited condensed consolidated financial statements required management to make estimates and judgments that affect the amounts of assets, liabilities (including forward loss reserves), revenues and expenses, and related disclosures of contingent assets and liabilities. These estimates are based on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates.
Earnings (Loss) Per Share	Earnings (Loss) Per Share Basic earnings (loss) per share are computed by dividing income (loss) available to common shareholders by the weighted-average number of common shares outstanding in each period. Diluted earnings per share are computed by dividing income available to common shareholders by the weighted-average number of common shares outstanding, plus any potential dilutive shares that could be issued if exercised or converted into common stock in each period.
Fair Value	Fair Value Assets and liabilities that are measured, recorded or disclosed at fair value on a recurring basis are categorized using the fair value hierarchy. The fair value hierarchy has three levels based on the reliability of the inputs used to determine fair value. Level 1, the highest level, refers to the values determined based on quoted prices in active markets for identical assets. Level 2 refers to fair values estimated using significant observable inputs. Level 3, the lowest level, includes fair values estimated using significant unobservable inputs.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash equivalents consist of highly liquid instruments purchased with original maturities of three months or less. Our cash accounts are not reduced for checks written until the checks are presented for payment and paid by our bank. These assets are valued at cost, which approximates fair value, which we classify as Level 1. See Fair Value above.
Derivatives Instruments	Derivative Instruments We recognize derivative instruments on our consolidated balance sheets at their fair value. On the date that we enter into a derivative contract, we designate the derivative instrument as a fair value hedge, a cash flow hedge, a hedge of a net investment in a foreign operation, or a derivative instrument that will not be accounted for using hedge accounting methods. As of October 1, 2016, all of our derivative instruments were designated as cash flow hedges. We record changes in the fair value of a derivative instrument that is highly effective and that is designated and qualifies as a cash flow hedge in other comprehensive income (loss), net of tax until our earnings are affected by the variability of cash flows of the underlying hedge. We record any hedge ineffectiveness and amounts excluded from effectiveness testing in current period earnings within interest expense. We report changes in the fair values of derivative instruments that are not designated or do not qualify for hedge accounting in current period earnings. We classify cash flows from derivative instruments on the consolidated statements of cash flows in the same category as the item being hedged or on a basis consistent with the nature of the instrument. When we determine that a derivative instrument is not highly effective as a hedge, we discontinue hedge accounting prospectively. In all situations in which we discontinue hedge accounting and the derivative instrument remains outstanding, we will carry the derivative instrument at its fair value on our consolidated balance sheets and recognize subsequent changes in its fair value in our current period earnings.
Inventories	Inventories Inventories are stated at the lower of cost or market with cost being determined using a moving average cost basis for raw materials and actual cost for work-in-process and finished goods, with units being relieved and charged to cost of sales on a first-in, first-out basis. Market value for raw materials is based on replacement cost and for other inventory classifications it is based on net realizable value. Inventoried costs include raw materials, outside processing, direct labor and allocated overhead, adjusted for any abnormal amounts of idle facility expense, freight, handling costs, and wasted materials (spoilage) incurred. Costs under long-term contracts are accumulated into, and removed from, inventory on the same basis as other contracts. We assess the inventory carrying value and reduce it, if necessary, to its net realizable value based on customer orders on hand, and internal demand forecasts using management’s best estimates given information currently available. We maintain a reserve for potentially excess and obsolete inventories and inventories that are carried at costs that are higher than their estimated net realizable values.
Production Cost of Contracts	Production Cost of Contracts Production cost of contracts includes non-recurring production costs, such as design and engineering costs, and tooling and other special-purpose machinery necessary to build parts as specified in a contract. Production costs of contracts are recorded to cost of goods sold using the units of delivery method. We review the value of the production cost of contracts on a quarterly basis to ensure when added to the estimated cost to complete, the value is not greater than the estimated realizable value of the related contracts.
Assets Held For Sale	Assets Held For Sale In the fourth quarter of 2015, we made the decision to sell our Huntsville, Alabama and Iuka, Mississippi (collectively, “Miltec”) operations and our Pittsburgh, Pennsylvania operation, both of which were part of our Electronic Systems operating segment, and as a result, we met the criteria for assets held for sale. However, the proposed sale of these two operations did not represent a strategic shift in our business and thus, were included in the ongoing operating results in the consolidated statements of operations for all periods presented.
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss Accumulated other comprehensive loss, as reflected in the condensed consolidated balance sheets under the equity section, was comprised of cumulative pension and retirement liability adjustments and changes in the fair value, net of tax, of a derivative instrument that is highly effective and that is designated and qualifies as a cash flow hedge.
Provision for Estimated Losses on Contracts	Provision for Estimated Losses on Contracts We record provisions for the total anticipated losses on contracts considering total estimated costs to complete the contract compared to total anticipated revenues in the period in which such losses are identified. The provisions for estimated losses on contracts require us to make certain estimates and assumptions, including those with respect to the future revenue under a contract and the future cost to complete the contract. Our estimate of the future cost to complete a contract may include assumptions as to improvements in manufacturing efficiency, reductions in operating and material costs, and our ability to resolve claims and assertions with our customers. If any of these or other assumptions and estimates do not materialize in the future, we may be required to record additional provisions for estimated losses on contracts.
Recent Accounting Pronouncements	Recent Accounting Pronouncements New Accounting Guidance Adopted in 2016 In August 2015, the FASB issued ASU 2015-15, “Imputation of Interest (Subtopic 835-30)” (“ASU 2015-15”), which provides guidance on the presentation and subsequent measurement of debt issuance costs associated with line-of-credit arrangements. Other guidance does not address presentation or subsequent measurement of debt issuance costs related to line-of-credit arrangements. Thus, the SEC staff would not object to an entity deferring and presenting debt issuance costs as an asset and subsequently amortizing the deferred debt issuance costs ratably over the term of the line-of-credit arrangement, regardless of whether there are any outstanding borrowings on the line-of-credit arrangement. The new guidance was effective for us beginning January 1, 2016. We did not have debt issuance costs associated with line-of-credit arrangements and thus, the adoption of this new guidance did not have a significant impact on our condensed consolidated financial statements. In June 2015, the FASB issued ASU 2015-10, “Technical Corrections and Improvements” (“ASU 2015-10”), which covers a wide range of Topics in the Codification. The amendments in ASU 2015-10 represent changes to make minor corrections or minor improvements to the Codification that are not expected to have a significant effect on current accounting practice or create a significant administrative cost on most entities. The amendments in this new guidance that require transition guidance were effective for us beginning January 1, 2016. The adoption of this standard did not have a significant impact on our condensed consolidated financial statements. In April 2015, the FASB issued ASU 2015-05, “Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement” (“ASU 2015-05”), which provides guidance on fees paid by a customer in a cloud computing arrangement. If a cloud computing arrangement includes a software license, the customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. The new guidance was effective for us beginning January 1, 2016. The adoption of this standard did not have a significant impact on our condensed consolidated financial statements. In April 2015, the FASB issued ASU 2015-03, “Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs” (“ASU 2015-03”), which changes the presentation of debt issuance costs in financial statements. Under ASU 2015-03, an entity presents such costs in the balance sheet as a direct deduction from the related debt liability rather than as an asset. Amortization of those costs is reported as interest expense. The new guidance was effective for us beginning January 1, 2016. As a result of the adoption of this new guidance, we reclassed $3.4 million of debt issuance costs against $180.0 million of total debt as of October 1, 2016. In January 2015, the FASB issued ASU 2015-01, “Income Statement - Extraordinary and Unusual Items (Subtopic 225-20)” (“ASU 2015-01”), which eliminates from U.S. GAAP the concept of extraordinary items. Current guidance requires separate classification, presentation, and disclosure of extraordinary events and transactions. In addition, an event or transaction is presumed to be an ordinary and usual activity of the reporting entity unless evidence clearly supports its classification as an extraordinary item. The new guidance was effective for us beginning January 1, 2016. The adoption of this standard did not have a significant impact on our condensed consolidated financial statements. In June 2014, the FASB issued ASU 2014-12, “Compensation - Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide that a Performance Target Could be Achieved after the Requisite Service Period” (“ASU 2014-12”), which requires that a performance target that affects vesting, and that could be achieved after the requisite service period, be treated as a performance condition. Thus, the performance target should not be reflected in estimating the grant date fair value of the award. This update further clarifies that compensation cost should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the period(s) for which the requisite service has already been rendered. The new guidance was effective for us beginning January 1, 2016. The adoption of this standard did not have a significant impact on our condensed consolidated financial statements. Recently Issued Accounting Standards In August 2016, the FASB issued ASU 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments” (“ASU 2016-15”), which addresses the following eight specific cash flow issues: Debt prepayment or debt extinguishment costs; settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing; contingent consideration payments made after a business combination; proceeds from the settlement of insurance claims; proceeds from the settlement of corporate-owned life insurance policies (“COLIs”) (including bank-owned life insurance policies [“BOLIs”]); distributions received from equity method investees; beneficial interests in securitization transactions; and separately identifiable cash flows and application of the predominance principle. The new guidance is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods, which will be our interim period beginning January 1, 2018. We are evaluating the impact of this standard. In May 2016, the FASB issued ASU 2016-12, “Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients” (“ASU 2016-12”), which amends the guidance in the new revenue standard on collectability, noncash consideration, presentation of sales tax, and transition. The amendments are intended to address implementation issues and provide additional practical expedients to reduce the cost and complexity of applying the new revenue standard. The new guidance is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods, which will be our interim period beginning January 1, 2018. Early adoption is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods with that reporting period. We are evaluating the impact of this standard. In May 2016, the FASB issued ASU 2016-11, “Revenue Recognition (Topic 605) and Derivatives and Hedging (Topic 815): Rescission of SEC Guidance Because of Accounting Standards Updates 2014-09 and 2014-06 Pursuant to Staff Announcements at the March 3, 2016 EITF Meeting” (“ASU 2016-11”), which clarifies revenue and expense recognition for freight costs, accounting for shipping and handling fees and costs, and accounting for consideration given by a vendor to a customer. The new guidance is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods, which will be our interim period beginning January 1, 2018. Early adoption is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods with that reporting period. We are evaluating the impact of this standard. In April 2016, the FASB issued ASU 2016-10, “Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing” (“ASU 2016-10”), which clarifies the following two aspects of Topic 606: (a) identifying performance obligations; and (b) the licensing implementation guidance. The amendments do not change the core principle of the guidance in Topic 606. The new guidance is effective for annual periods beginning after December 15, 2017, including interim periods within those annual periods, which will be our interim period beginning January 1, 2018. Early adoption is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods with that reporting period. We are evaluating the impact of this standard. In March 2016, the FASB issued ASU 2016-09, “Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting” (“ASU 2016-09”), which is intended to improve the accounting for employee share-based payments. The new guidance is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years, which will be our interim period beginning January 1, 2017. Early adoption is permitted in any interim or annual reporting period. We are evaluating the impact of this standard and currently do not anticipate it will have a significant impact on our condensed consolidated financial statements. In March 2016, the FASB issued ASU 2016-05, “Derivatives and Hedging (Topic 815): Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships” (“ASU 2016-05”), which clarifies that a change in the counter party to a derivative instrument designated as a hedging instrument does not require dedesignation of that hedging relationship, provided that all other hedge accounting criteria are met. The new guidance is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years, which will be our interim period beginning January 1, 2017. Early adoption is permitted as of the beginning of an interim period on a modified retrospective basis. We are evaluating the impact of this standard and currently do not anticipate it will have a significant impact on our condensed consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842)” (“ASU 2016-02”), which requires lessees to present right-of-use assets and lease liabilities on the balance sheet. Lessees are required to apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The new guidance is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, which will be our interim period beginning January 1, 2019. We are evaluating the impact of this standard and currently anticipate it will impact our condensed consolidated financial statements. In July 2015, the FASB issued ASU 2015-11, “Inventory (Topic 330)” (“ASU 2015-11”), which requires inventory within the scope of ASU 2015-11 to be measured at the lower of cost and net realizable value. Subsequent measurement is unchanged for inventory measured using last-in, first-out (“LIFO”) or the retail inventory value. The new guidance is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years, which will be our interim period beginning January 1, 2017. Early adoption is permitted as of the beginning of an interim or annual reporting period. We are evaluating the impact of this standard, but currently do not anticipate it will have a significant impact on our condensed consolidated financial statements. In August 2014, the FASB issued ASU 2014-15, “Presentation of Financial Statements - Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern” (“ASU 2014-15”), which defines management’s responsibility to evaluate whether there is substantial doubt about a company’s ability to continue as a going concern. ASU 2014-15 also provide principles and definitions that are intended to reduce diversity in the timing and content of disclosures in the financial statement footnotes. The new guidance is effective for annual periods ending after December 15, 2016, which will be our year ending December 31, 2016, and interim periods beginning after December 15, 2016, which will be our interim period beginning January 1, 2017. Early adoption is permitted. We are evaluating the impact of this standard and currently do not anticipate it will have a significant impact on our condensed consolidated financial statements. In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09”), which outlines a new, single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. This new revenue recognition model provides a five-step analysis in determining when and how revenue is recognized. It requires entities to exercise judgment when considering the terms of the contract(s) which include (i) identifying the contract(s) with the customer, (ii) identifying the separate performance obligations in the contract, (iii) determining the transaction price, (iv) allocating the transaction price to the separate performance obligations, and (v) recognizing revenue when each performance obligation is satisfied. Thus, it depicts the transfer of promised goods or services to customers in an amount that reflects the consideration an entity expects to receive in exchange for those goods or services. Companies have the option of applying the provisions of ASU 2014-09 either retrospectively to each prior reporting period presented or retrospectively with the cumulative effect of initially applying this guidance recognized at the date of initial application. In August 2015, the FASB issued ASU 2015-14, “Revenue From Contracts With Customers (Topic 606)” (“ASU 2015-14”), which defer the effective date of ASU 2014-09 by one year to annual periods beginning after December 15, 2017, including interim reporting periods within that reporting period. Early adoption is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. The new guidance is effective for us beginning January 1, 2018 and will provide us additional time to evaluate the method and impact that ASU 2014-09 will have on our condensed consolidated financial statements. We are evaluating the impact of this standard, and with the percentage of completion, unit of delivery method of recognizing revenue being eliminated under ASU 2014-09, we currently anticipate our revenue, cost of sales, and related items on our condensed consolidated financial statements will be impacted.

Summary of Significant Accounting Policies (Tables)

9 Months Ended

Oct. 01, 2016

Accounting Policies [Abstract]

Schedule of Supplemental Cash Flow

Supplemental Cash Flow Information



	(In thousands) Nine Months Ended
	October 1, 2016		October 3, 2015
Interest paid	$	5,283	$	24,066
Taxes paid	5,539		1,150
Non-cash activities:
Purchases of property and equipment not paid	687		957

Weighted Average Number of Shares Outstanding Used to Compute Earnings Per Share

The net income (loss), weighted-average number of common shares outstanding used to compute earnings (loss) per share, were as follows:



	(In thousands, except per share data) Three Months Ended					(In thousands, except per share data) Nine Months Ended
	October 1, 2016		October 3, 2015			October 1, 2016		October 3, 2015
Net income (loss)	$	5,014	$	(9,515	)	$	22,425	$	(9,706	)
Weighted-average number of common shares outstanding
Basic weighted-average common shares outstanding	11,169		11,083			11,141		11,035
Dilutive potential common shares	141		—			120		—
Diluted weighted-average common shares outstanding	11,310		11,083			11,261		11,035
Earnings (loss) per share
Basic	$	0.45	$	(0.86	)	$	2.01	$	(0.88	)
Diluted	$	0.44	$	(0.86	)	$	1.99	$	(0.88	)

Weighted Average Number of Shares Outstanding Excluded from Computation of Diluted Earnings

(In thousands)

Three Months Ended

(In thousands)

Nine Months Ended

October 1,
2016

October 3,
2015

October 1,
2016

October 3,
2015

Stock options and stock units

515

885

617

902

Disclosure of Long Lived Assets Held-for-sale

The carrying values of the major classes of assets and liabilities related to these assets held for sale were as follows:



	(In thousands)
	October 1, 2016		December 31, 2015
Assets
Accounts receivable (less allowance for doubtful accounts of zero and $24 at October 1, 2016 and December 31, 2015, respectively)	$	—	$	9,395
Inventory	—		6,453
Deferred income taxes	—		1,246
Other current assets	—		3,315
Total current assets	—		20,409
Property and equipment, net of accumulated depreciation of zero and $8,509 at October 1, 2016 and December 31, 2015, respectively	—		1,941
Goodwill	—		17,772
Other intangible assets	—		1,514
	$	—	$	41,636
Liabilities
Accounts payable	$	—	$	4,836
Accrued liabilities	—		1,944
	$	—	$	6,780

Restructuring Activities (Tables)

9 Months Ended

Oct. 01, 2016

Restructuring and Related Activities [Abstract]

Schedule of Restructuring Activities

Our restructuring activities in the nine months ended October 1, 2016 were as follows (in thousands):



	December 31, 2015		Nine Months Ended October 1, 2016							October 1, 2016
	Balance		Charges		Cash Payments			Change in Estimates		Balance
Severance and benefits	$	722	$	49	$	(766	)	$	—	$	5
Lease termination	1,181		133		(574		)	—		740
Ending balance	$	1,903	$	182	$	(1,340	)	$	—	$	745

Fair Value Measurements (Tables)

9 Months Ended

Oct. 01, 2016

Fair Value Disclosures [Abstract]

Schedule of Fair Value Measurements



	As of October 1, 2016								As of December 31, 2015
	Fair Value Measurements Using								Fair Value Measurements Using
	Level 1		Level 2		Level 3		Total Balance		Level 1		Level 2		Level 3		Total Balance
Assets
Money market funds⁽¹⁾	$	6,455	$	—	$	—	$	6,455	$	4,587	$	—	$	—	$	4,587
Interest rate cap hedges⁽²⁾	—		151		—		151		—		963		—		963
Total Assets	$	6,455	$	151	$	—	$	6,606	$	4,587	$	963	$	—	$	5,550

(1) Included as cash and cash equivalents.

(2) Interest rate cap hedge premium included as other current assets and other assets.

- Definition

Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances.

+ References + Details

Financial Instruments (Tables)

9 Months Ended

Oct. 01, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments

The recorded fair value of the derivative financial instruments in the consolidated balance sheets were as follows:



	(In thousands) October 1, 2016				(In thousands) December 31, 2015
	Other Current Assets		Other Long Term Assets		Other Current Assets		Other Long Term Assets
Derivatives Designated as Hedging Instruments
Cash Flow Hedges:
Interest rate cap premiums	$	—	$	151	$	1	$	962

Total Derivatives	$	—	$	151	$	1	$	962

- Definition

Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 5
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-Name Accounting Standards Codification
-Topic 235
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-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Inventories (Tables)

9 Months Ended

Oct. 01, 2016

Inventory Disclosure [Abstract]

Summary of Inventories

Inventories consisted of the following:



	(In thousands)
	October 1, 2016		December 31, 2015
Raw materials and supplies	$	68,688	$	61,840
Work in process	61,641		49,299
Finished goods	7,783		10,073
	138,112		121,212
Less progress payments	8,343		5,808
Total	$	129,769	$	115,404

Long-Term Debt (Tables)

9 Months Ended

Oct. 01, 2016

Debt Disclosure [Abstract]

Long Term Debt Summary

Long-term debt and the current period interest rates were as follows:



	(In thousands)
	October 1, 2016			December 31, 2015
New term loan	$	180,000		$	245,000
New revolving credit facility	—			—
Other debt (fixed 5.41%)	5			26
Total debt	180,005			245,026
Less current portion	5			26
Total long-term debt	180,000			245,000
Less debt issuance costs	3,382			4,339
Total long-term debt, net of debt issuance costs	$	176,618		$	240,661
Weighted-average interest rate	3.35		%	3.07		%

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Subparagraph (SX 210.5-02.22)
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+ Details

Employee Benefit Plans (Tables)

9 Months Ended

Oct. 01, 2016

Compensation and Retirement Disclosure [Abstract]

Components of Net Periodic Pension Cost

The components of net periodic pension expense were as follows:



	(In thousands)						(In thousands)
	Three Months Ended						Nine Months Ended
	October 1, 2016			October 3, 2015			October 1, 2016			October 3, 2015
Service cost	$	133		$	196		$	399		$	589
Interest cost	341			338			1,025			1,013
Expected return on plan assets	(370		)	(374		)	(1,111		)	(1,121		)
Amortization of actuarial losses	191			222			572			665
Net periodic pension cost	$	295		$	382		$	885		$	1,146

Reclassification out of Accumulated Other Comprehensive Income

The components of the reclassifications of net actuarial losses from accumulated other comprehensive loss to net income for the three and nine months ended October 1, 2016 were as follows:



	(In thousands)
	Three Months Ended			Nine Months Ended
	October 1, 2016			October 1, 2016
Amortization of actuarial losses - total before tax ⁽¹⁾	$	(191	)	$	(572	)
Tax benefit	71			212
Net of tax	$	(120	)	$	(360	)


(1)	The amortization expense is included in the computation of periodic pension cost and is a decrease to net income upon reclassification from accumulated other comprehensive loss.

Business Segment Information (Tables)

9 Months Ended

Oct. 01, 2016

Segment Reporting [Abstract]

Financial Information by Reportable Segment

Financial information by reportable operating segment was as follows:



	(In thousands) Three Months Ended						(In thousands) Nine Months Ended
	October 1, 2016			October 3, 2015			October 1, 2016			October 3, 2015
Net Revenues
Structural Systems	$	60,931		$	64,170		$	185,642		$	212,306
Electronic Systems	71,640			97,500			222,514			297,129
Total Net Revenues	$	132,571		$	161,670		$	408,156		$	509,435
Segment Operating Income
Structural Systems	$	5,893		$	(6,028	)	$	13,347		$	2,980
Electronic Systems	6,600			8,598			19,769			22,575
	12,493			2,570			33,116			25,555
Corporate General and Administrative Expenses ⁽¹⁾	(4,441		)	(3,747		)	(13,505		)	(12,266		)
Operating Income	$	8,052		$	(1,177	)	$	19,611		$	13,289
Depreciation and Amortization Expenses
Structural Systems	$	2,851		$	2,386		$	6,683		$	7,009
Electronic Systems	3,232			4,207			10,661			12,928
Corporate Administration	6			42			76			127
Total Depreciation and Amortization Expenses	$	6,089		$	6,635		$	17,420		$	20,064
Capital Expenditures
Structural Systems	$	3,555		$	2,329		$	10,149		$	8,080
Electronic Systems	947			758			1,701			3,196
Corporate Administration	—			4			—			10
Total Capital Expenditures	$	4,502		$	3,091		$	11,850		$	11,286


(1)	Includes costs not allocated to either the Structural Systems or Electronic Systems operating segments.

Segment Assets

Our segment assets are as follows:



	(In thousands)
	October 1, 2016		December 31, 2015
Total Assets
Structural Systems	$	177,831	$	179,134
Electronic Systems	329,606		363,227
Corporate Administration ⁽¹⁾	13,545		14,720
Total Assets	$	520,982	$	557,081
Goodwill and Intangibles
Structural Systems	$	4,025	$	4,866
Electronic Systems	182,364		207,595
Total Goodwill and Intangibles	$	186,389	$	212,461


(1)	Includes assets not specifically identified to either the Structural Systems or Electronic Systems operating segments, including cash.

Summary of Significant Accounting Policies - Additional Information (Details) $ in Millions	9 Months Ended
	Oct. 01, 2016 USD ($) Segment
Accounting Policies [Abstract]
Number of reportable segments \| Segment	2
Cash equivalent maturity period	3 months
Accounting Standards Update 2015-03
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt issuance costs \| $	$ 3.4
Total debt \| $	$ 180.0
Assets Held For Sale \| Electronic Systems
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of operating segments \| Segment	2

Summary of Significant Accounting Policies - Supplemental Cash Flow Items (Details) - USD ($) $ in Thousands	9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015
Supplemental Disclosures of Cash Flow Information
Interest paid	$ 5,283	$ 24,066
Taxes paid	5,539	1,150
Non-cash activities:
Purchases of property and equipment not paid	$ 687	$ 957

Summary of Significant Accounting Policies - Weighted Average Number of Shares Outstanding Used to Compute Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015
Accounting Policies [Abstract]
Net income (loss)	$ 5,014	$ (9,515)	$ 22,425	$ (9,706)
Weighted-average number of common shares outstanding
Basic weighted-average common shares outstanding (in shares)	11,169	11,083	11,141	11,035
Dilutive potential common shares (in shares)	141	0	120	0
Diluted weighted-average common shares outstanding (in shares)	11,310	11,083	11,261	11,035
Earnings (loss) per share
Basic (in dollars per share)	$ 0.45	$ (0.86)	$ 2.01	$ (0.88)
Diluted (in dollars per share)	$ 0.44	$ (0.86)	$ 1.99	$ (0.88)

Summary of Significant Accounting Policies - Weighted Average Number of Shares Outstanding Excluded from Computation of Diluted Earnings (Detail) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015
Stock Options and Restricted Stock Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive stock options and stock units to purchase common stock (in shares)	515	885	617	902

Summary of Significant Accounting Policies - Assets Held For Sale (Details) - USD ($) $ in Thousands	Mar. 25, 2016	Jan. 22, 2016	Oct. 01, 2016	Dec. 31, 2015
Assets
Total current assets			$ 0	$ 41,636
Assets Disposed of by Sale \| Electronic Systems \| Pittsburgh, Pennsylvania Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration received		$ 38,500
Gain on divestiture		18,300
Transaction costs		200
Assets
Total Assets		24,000
Liabilities
Total Liabilities		$ 4,000
Assets Disposed of by Sale \| Electronic Systems \| Miltec Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration received	$ 14,600
Gain on divestiture	500
Transaction costs	1,300
Assets
Total Assets	15,400
Liabilities
Total Liabilities	$ 2,600
Assets Held For Sale \| Electronic Systems
Assets
Accounts receivable (less allowance for doubtful accounts of zero and $24 at October 1, 2016 and December 31, 2015, respectively)			0	9,395
Allowance for doubtful accounts			0	24
Inventory			0	6,453
Deferred income taxes			0	1,246
Other current assets			0	3,315
Total current assets			0	20,409
Property and equipment, net of accumulated depreciation of zero and $8,509 at October 1, 2016 and December 31, 2015, respectively			0	1,941
Accumulated depreciation			0	8,509
Goodwill			0	17,772
Other intangible assets			0	1,514
Total Assets			0	41,636
Liabilities
Accounts payable			0	4,836
Accrued liabilities			0	1,944
Total Liabilities			$ 0	$ 6,780

Restructuring Activities (Details) - USD ($) $ in Thousands	9 Months Ended
Restructuring Activities (Details) - USD ($) $ in Thousands	Oct. 01, 2016	Oct. 01, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring charges accrued during period	$ 1,903	$ 745
Restructuring Reserve [Roll Forward]
Beginning balance	1,903
Charges	182
Cash Payments	(1,340)
Change in Estimates	0
Ending balance	745
Severance and benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges accrued during period	722	5
Restructuring Reserve [Roll Forward]
Beginning balance	722
Charges	49
Cash Payments	(766)
Change in Estimates	0
Ending balance	5
Lease termination
Restructuring Cost and Reserve [Line Items]
Restructuring charges accrued during period	1,181	740
Restructuring Reserve [Roll Forward]
Beginning balance	1,181
Charges	133
Cash Payments	(574)
Change in Estimates	0
Ending balance	740
Restructuring Plan, 2015 \| Severance benefits and loss on early exit from leases
Restructuring Cost and Reserve [Line Items]
Restructuring costs incurred to date		2,200
Restructuring Plan, 2015 \| Electronic Systems \| Severance and benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges accrued during period	100	100
Restructuring Reserve [Roll Forward]
Ending balance	100
Restructuring Plan, 2015 \| Structural Systems \| Severance and benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges accrued during period	600	600
Restructuring Reserve [Roll Forward]
Ending balance	600
Restructuring Plan, 2016 \| Severance benefits and loss on early exit from leases
Restructuring Cost and Reserve [Line Items]
Restructuring costs incurred to date		200
Restructuring Plan, 2016 \| Electronic Systems \| Lease termination
Restructuring Cost and Reserve [Line Items]
Restructuring charges accrued during period	100	$ 100
Restructuring Reserve [Roll Forward]
Ending balance	$ 100

Fair Value Measurements (Details) - Recurring Measurement - USD ($) $ in Thousands	Oct. 01, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	$ 6,455	$ 4,587
Interest rate cap hedges	151	963
Total Assets	6,606	5,550
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	6,455	4,587
Interest rate cap hedges	0	0
Total Assets	6,455	4,587
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	0	0
Interest rate cap hedges	151	963
Total Assets	151	963
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	0	0
Interest rate cap hedges	0	0
Total Assets	$ 0	$ 0

Financial Instruments (Details) - USD ($)	3 Months Ended		9 Months Ended
Financial Instruments (Details) - USD ($)	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015	Dec. 31, 2015
Derivative [Line Items]
Interest rate cap hedges recognized in other comprehensive income, net of tax	$ 0	$ 0	$ 556,000	$ 0
Other Current Assets
Derivative [Line Items]
Derivative asset	0		0		$ 1,000
Other Long Term Assets
Derivative [Line Items]
Derivative asset	151,000		151,000		962,000
Interest rate cap premiums
Derivative [Line Items]
Interest rate cap hedges recognized in other comprehensive income, net of tax	100,000
Gain (loss) on derivatives, net			0
Cash Flow Hedging \| Designated as Hedging Instrument \| Interest rate cap premiums \| Other Current Assets
Derivative [Line Items]
Derivative asset	0		0		1,000
Cash Flow Hedging \| Designated as Hedging Instrument \| Interest rate cap premiums \| Other Long Term Assets
Derivative [Line Items]
Derivative asset	$ 151,000		$ 151,000		$ 962,000

Inventories (Detail) - USD ($) $ in Thousands	Oct. 01, 2016	Dec. 31, 2015
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 68,688	$ 61,840
Work in process	61,641	49,299
Finished goods	7,783	10,073
Inventory, gross	138,112	121,212
Less progress payments	8,343	5,808
Total	$ 129,769	$ 115,404

Goodwill (Detail) - Electronic Systems - USD ($) $ in Millions	Oct. 01, 2016	Dec. 31, 2015
Goodwill [Line Items]
Gross goodwill	$ 164.3	$ 164.3
Accumulated goodwill impairment	$ 81.7	$ 81.7

Accrued Liabilities (Detail) - USD ($) $ in Thousands	Oct. 01, 2016	Dec. 31, 2015
Payables and Accruals [Abstract]
Accrued compensation	$ 17,568	$ 13,521
Accrued income tax and sales tax	1,096	1,513
Customer deposits	2,512	1,758
Interest payable	209	58
Provision for forward loss reserves	6,258	11,925
Other	2,867	7,683
Total	$ 30,510	$ 36,458

Long Term Debt - Summary (Detail) - USD ($) $ in Thousands	Oct. 01, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Long-term debt	$ 180,005	$ 245,026
Less current portion	5	26
Total long-term debt	180,000	245,000
Less debt issuance costs	3,382	4,339
Total long-term debt, net of debt issuance costs	$ 176,618	$ 240,661
Weighted-average interest rate (percent)	3.35%	3.07%
Senior Secured Term Loan
Debt Instrument [Line Items]
Long-term debt	$ 180,000	$ 245,000
New Credit Facilities
Debt Instrument [Line Items]
Long-term debt	0	0
Other Debt
Debt Instrument [Line Items]
Long-term debt	$ 5	$ 26
Fixed rate, note (percent)	5.41%

Long-Term Debt - Additional information (Detail) - USD ($)	1 Months Ended			3 Months Ended		9 Months Ended
	Oct. 31, 2015	Jul. 31, 2015	Jun. 30, 2015	Oct. 01, 2016	Jul. 04, 2015	Oct. 01, 2016	Oct. 03, 2015	Dec. 31, 2015
Debt Instrument [Line Items]
Unamortized debt issuance costs expensed						$ 0	$ 4,970,000
Long-term debt				$ 176,618,000		$ 176,618,000		$ 240,661,000
Interest rate cap
Debt Instrument [Line Items]
Interest rate hedge	$ 135,000,000
Payments made for interest rate hedge	$ 1,000,000
New Credit Facilities \| First two years
Debt Instrument [Line Items]
Prepayment amount of principal outstanding				5.00%		5.00%
New Credit Facilities \| Third year
Debt Instrument [Line Items]
Prepayment amount of principal outstanding				7.50%		7.50%
New Credit Facilities \| Fourth and fifth years
Debt Instrument [Line Items]
Prepayment amount of principal outstanding				10.00%		10.00%
New Credit Facilities \| Minimum
Debt Instrument [Line Items]
Commitment fee						0.175%
New Credit Facilities \| Maximum
Debt Instrument [Line Items]
Commitment fee						0.30%
New Credit Facilities \| LIBOR \| Minimum
Debt Instrument [Line Items]
Spread on variable rate						1.50%
New Credit Facilities \| LIBOR \| Maximum
Debt Instrument [Line Items]
Spread on variable rate						2.75%
New Credit Facilities \| Federal Funds Rate
Debt Instrument [Line Items]
Spread on base rate						0.50%
New Credit Facilities \| Eurodollar Rate
Debt Instrument [Line Items]
Spread on base rate						1.00%
New Credit Facilities \| Base Rate \| Minimum
Debt Instrument [Line Items]
Spread on variable rate						0.50%
New Credit Facilities \| Base Rate \| Maximum
Debt Instrument [Line Items]
Spread on variable rate						1.75%
Senior Secured Term Loan \| New Credit Facilities
Debt Instrument [Line Items]
Debt amount			$ 275,000,000.0
Term			5 years
Borrowings from senior secured debt		$ 275,000,000
Repayments of long-term debt				$ 10,000,000		$ 65,000,000
Senior Secured Term Loan \| Existing Credit Facilities
Debt Instrument [Line Items]
Cash paid on extinguishment of debt					$ 80,000,000
Unamortized debt issuance costs expensed					2,800,000
New Revolving Credit Facility \| New Credit Facilities
Debt Instrument [Line Items]
Debt amount			$ 200,000,000.0
Proceeds from revolving credit facility					65,000,000
Debt issuance costs					$ 4,800,000
Repayments of long-term debt		65,000,000
Remaining borrowing capacity				198,500,000		198,500,000
Outstanding standby letters of credit				$ 1,500,000		$ 1,500,000
Existing Notes \| Existing Credit Facilities
Debt Instrument [Line Items]
Unamortized debt issuance costs expensed		2,100,000
Long-term debt		200,000,000
Call premium incurred		$ 9,800,000

Shareholders' Equity (Detail) - shares	Oct. 01, 2016	Dec. 31, 2015
Equity [Abstract]
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0

Employee Benefit Plans - Components of Net Periodic Pension Cost for Defined Benefit Pension Plan and Retirement Plan (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015
Compensation and Retirement Disclosure [Abstract]
Service cost	$ 133	$ 196	$ 399	$ 589
Interest cost	341	338	1,025	1,013
Expected return on plan assets	(370)	(374)	(1,111)	(1,121)
Amortization of actuarial losses	191	222	572	665
Net periodic pension cost	$ 295	$ 382	$ 885	$ 1,146

Employee Benefit Plans - Reclassifications from Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Oct. 01, 2016	Oct. 01, 2016
Compensation and Retirement Disclosure [Abstract]
Amortization of actuarial loss - total before tax	$ (191)	$ (572)
Tax benefit	71	212
Net of tax	$ (120)	$ (360)

Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Income Taxes (Detail) - USD ($) $ in Thousands	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015	Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income tax expense (benefit)	$ 1,234	$ (6,932)	$ 9,863	$ (6,714)
Effective income tax expense (benefit) rate	19.80%	(42.10%)	30.50%	(40.90%)
Unrecognized tax benefits	$ 2,900		$ 2,900		$ 3,000
Expected reduction in unrecognized tax benefits	$ 2,000		2,000
Pittsburgh and Miltec Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on Divestitures			$ 18,800

Contingencies (Detail) - Structural Systems $ in Millions	Oct. 01, 2016 USD ($)
El Mirage and Monrovia, California
Loss Contingencies [Line Items]
Reserve for estimated liability	$ 1.5
West Covina, California
Loss Contingencies [Line Items]
Reserve for estimated liability	0.4
Minimum \| West Covina, California
Loss Contingencies [Line Items]
Possible loss	0.4
Maximum \| West Covina, California
Loss Contingencies [Line Items]
Possible loss	$ 3.1

Business Segment Information - Financial Information by Reportable Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015
Segment Reporting Information [Line Items]
Net Revenues	$ 132,571	$ 161,670	$ 408,156	$ 509,435
Segment Operating Income	12,493	2,570	33,116	25,555
Operating Income	8,052	(1,177)	19,611	13,289
Depreciation and Amortization Expenses	6,089	6,635	17,420	20,064
Capital Expenditures	4,502	3,091	11,850	11,286
Operating Segments \| Structural Systems
Segment Reporting Information [Line Items]
Net Revenues	60,931	64,170	185,642	212,306
Segment Operating Income	5,893	(6,028)	13,347	2,980
Depreciation and Amortization Expenses	2,851	2,386	6,683	7,009
Capital Expenditures	3,555	2,329	10,149	8,080
Operating Segments \| Electronic Systems
Segment Reporting Information [Line Items]
Net Revenues	71,640	97,500	222,514	297,129
Segment Operating Income	6,600	8,598	19,769	22,575
Depreciation and Amortization Expenses	3,232	4,207	10,661	12,928
Capital Expenditures	947	758	1,701	3,196
Corporate Administration
Segment Reporting Information [Line Items]
Corporate General and Administrative Expenses	(4,441)	(3,747)	(13,505)	(12,266)
Depreciation and Amortization Expenses	6	42	76	127
Capital Expenditures	$ 0	$ 4	$ 0	$ 10

Business Segment Information - Segment Assets (Detail) - USD ($) $ in Thousands	Oct. 01, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Total Assets	$ 520,982	$ 557,081
Total Goodwill and Intangibles	186,389	212,461
Operating Segments \| Structural Systems
Segment Reporting Information [Line Items]
Total Assets	177,831	179,134
Total Goodwill and Intangibles	4,025	4,866
Operating Segments \| Electronic Systems
Segment Reporting Information [Line Items]
Total Assets	329,606	363,227
Total Goodwill and Intangibles	182,364	207,595
Corporate Administration
Segment Reporting Information [Line Items]
Total Assets	$ 13,545	$ 14,720

Business Segment Information - Additional Information (Detail)	9 Months Ended
	Oct. 01, 2016 Segment
Segment Reporting [Abstract]
Number of reportable segments	2