v3.19.2
Document and Entity Information - shares
6 Months Ended
Jun. 29, 2019
Jul. 24, 2019
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 29, 2019  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q2  
Entity Registrant Name DUCOMMUN INC /DE/  
Entity Central Index Key 0000030305  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   11,531,959
Entity Emerging Growth Company false  
Entity Small Business false