Segment Assets (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 29, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Total Assets	$ 772,826	$ 785,074
Total Goodwill and Intangibles	332,851	338,296
Ducommun AeroStructures
Segment Reporting Information [Line Items]
Total Assets	258,661	248,326
Total Goodwill and Intangibles	66,336	67,459
Ducommun LaBarge Technologies
Segment Reporting Information [Line Items]
Total Assets	455,950	465,217
Total Goodwill and Intangibles	266,515	270,837
Corporate Administration
Segment Reporting Information [Line Items]
Total Assets	$ 58,215	$ 71,531