Cover Page - shares	6 Months Ended
	Jun. 27, 2020	Jul. 21, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 27, 2020
Document Transition Report	false
Entity File Number	001-08174
Entity Registrant Name	DUCOMMUN INCORPORATED
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	95-0693330
Entity Address, Address Line One	200 Sandpointe Avenue, Suite 700
Entity Address, City or Town	Santa Ana
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92707-5759
City Area Code	657
Local Phone Number	335-3665
Title of 12(b) Security	Common Stock, $.01 par value per share
Trading Symbol	DCO
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		11,683,483
Entity Central Index Key	0000030305
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Amendment Flag	false