Business Segment Information - Financial Information by Reportable Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 04, 2015		Mar. 29, 2014
Segment Reporting Information [Line Items]
Net Revenues	$ 172,920		$ 179,753
Segment Operating Income	8,423		18,136
Corporate General and Administrative Expenses	(4,796)	[1]	(3,308)	[1]
Operating Income	3,627		14,828
Depreciation and Amortization Expenses	6,914		7,426
Capital Expenditures	4,828		2,192
Ducommun AeroStructures
Segment Reporting Information [Line Items]
Net Revenues	72,058		81,654
Segment Operating Income	2,138		11,092
Depreciation and Amortization Expenses	2,513		2,416
Capital Expenditures	3,334		1,285
Ducommun LaBarge Technologies
Segment Reporting Information [Line Items]
Net Revenues	100,862		98,099
Segment Operating Income	6,285		7,044
Depreciation and Amortization Expenses	4,359		5,008
Capital Expenditures	1,490		897
Corporate Administration
Segment Reporting Information [Line Items]
Depreciation and Amortization Expenses	42		2
Capital Expenditures	$ 4		$ 10

[1] Includes costs not allocated to either the DLT or DAS operating segments.