Business Segment Information - Segment Assets (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 27, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Total Assets	$ 755,671	$ 764,199
Goodwill and Intangibles	319,634	327,405
Ducommun AeroStructures
Segment Reporting Information [Line Items]
Total Assets	244,207	241,502
Goodwill and Intangibles	63,926	65,213
Ducommun LaBarge Technologies
Segment Reporting Information [Line Items]
Total Assets	441,443	444,224
Goodwill and Intangibles	255,708	262,192
Corporate Administration
Segment Reporting Information [Line Items]
Total Assets	$ 70,021	$ 78,473