Business Segment Information - Financial Information by Reportable Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 28, 2014		Jun. 29, 2013		Jun. 28, 2014		Jun. 29, 2013
Segment Reporting Information [Line Items]
Net Sales	$ 186,516		$ 191,472		$ 366,269		$ 367,387
Segment Operating Income	20,590		20,152		37,880		34,717
Corporate General and Administrative Expenses	(4,015)	[1]	(5,109)	[1]	(7,322)	[1]	(9,372)	[1]
Operating Income	16,575		15,043		30,558		25,345
Depreciation and Amortization Expenses	7,699		7,140		15,125		14,173
Capital Expenditures	3,527		2,641		5,719		5,253
Ducommun AeroStructures
Segment Reporting Information [Line Items]
Net Sales	78,616		83,992		160,270		156,697
Segment Operating Income	9,833		8,985		20,079		15,616
Depreciation and Amortization Expenses	3,554		2,438		5,970		4,765
Capital Expenditures	1,435		1,495		2,720		3,049
Ducommun LaBarge Technologies
Segment Reporting Information [Line Items]
Net Sales	107,900		107,480		205,999		210,690
Segment Operating Income	10,757		11,167		17,801		19,101
Depreciation and Amortization Expenses	4,043		4,660		9,051		9,323
Capital Expenditures	2,078		1,128		2,975		2,180
Corporate Administration
Segment Reporting Information [Line Items]
Depreciation and Amortization Expenses	102		42		104		85
Capital Expenditures	$ 14		$ 18		$ 24		$ 24

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