Segment Assets (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Total Assets	$ 804,635	$ 808,087
Total Goodwill and Intangibles	344,043	351,699
Ducommun AeroStructures
Segment Reporting Information [Line Items]
Total Assets	255,928	240,950
Total Goodwill and Intangibles	68,886	70,314
Ducommun LaBarge Technologies
Segment Reporting Information [Line Items]
Total Assets	481,226	495,247
Total Goodwill and Intangibles	275,157	281,385
Corporate Administration
Segment Reporting Information [Line Items]
Total Assets	$ 67,481	$ 71,890