Segment Assets (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Total Assets	$ 765,608	$ 785,074
Total Goodwill and Intangibles	335,573	338,296
Ducommun AeroStructures
Segment Reporting Information [Line Items]
Total Assets	254,010	248,326
Total Goodwill and Intangibles	66,897	67,459
Ducommun LaBarge Technologies
Segment Reporting Information [Line Items]
Total Assets	456,589	465,217
Total Goodwill and Intangibles	268,676	270,837
Corporate Administration
Segment Reporting Information [Line Items]
Total Assets	$ 55,009	$ 71,531