Business Segment Information - Financial Information by Reportable Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 27, 2014		Sep. 28, 2013		Sep. 27, 2014		Sep. 28, 2013
Segment Reporting Information [Line Items]
Net Revenues	$ 188,164		$ 181,288		$ 554,433		$ 548,675
Segment Operating Income	15,478		15,229		53,358		50,538
Corporate General and Administrative Expenses	(5,134)	[1]	(3,276)	[1]	(12,456)	[1]	(13,240)	[1]
Operating Income	10,344		11,953		40,902		37,298
Depreciation and Amortization Expenses	6,704		7,202		21,829		21,375
Capital Expenditures	3,028		2,068		8,747		7,321
Ducommun AeroStructures
Segment Reporting Information [Line Items]
Net Revenues	81,357		77,740		241,627		234,437
Segment Operating Income	7,190		7,633		27,269		23,766
Depreciation and Amortization Expenses	2,272		2,621		8,242		7,386
Capital Expenditures	1,266		1,159		3,986		4,208
Ducommun LaBarge Technologies
Segment Reporting Information [Line Items]
Net Revenues	106,807		103,548		312,806		314,238
Segment Operating Income	8,288		7,596		26,089		26,772
Depreciation and Amortization Expenses	4,391		4,540		13,442		13,863
Capital Expenditures	1,761		866		4,736		3,046
Corporate Administration
Segment Reporting Information [Line Items]
Depreciation and Amortization Expenses	41		41		145		126
Capital Expenditures	$ 1		$ 43		$ 25		$ 67

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