v3.19.1
Document and Entity Information - shares
3 Months Ended
Mar. 30, 2019
Apr. 24, 2019
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 30, 2019  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q1  
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   11,497,942
Entity Emerging Growth Company false  
Entity Small Business false