Business Segment Information - Financial Information by Reportable Segment (Parenthetical) (Detail) (USD $)	12 Months Ended					3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Ducommun LaBarge Technologies	Dec. 31, 2011 Ducommun LaBarge Technologies	Dec. 31, 2013 Ducommun AeroStructures		Dec. 31, 2013 Embraer Legacy 400/500 Ducommun AeroStructures	Dec. 31, 2013 Boeing 777 Ducommun AeroStructures
Segment Reporting Information [Line Items]
Business acquisition, transaction costs				$ 300,000	$ 12,400,000
Business acquisition, transaction costs, change-in-control provision				400,000	3,700,000
Goodwill impairment loss	0	0	54,273,000		54,300,000
Workers' compensation expense	1,200,000	600,000	500,000
Operating income (loss)	37,568,000	54,813,000	(34,127,000)			14,100,000	[1],[2]
Asset impairments	6,975,000	0	0			7,000,000		5,700,000	1,300,000
Forward loss provision	5,234,000	0	0			5,200,000		3,900,000	1,300,000
Inventory write-down								$ 1,900,000

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

[2] The 2013 period includes $14.1 million in charges related to fourth quarter asset impairment charges of $5.7 million on the Embraer Legacy 450/500 contracts and $1.3 million on the Boeing 777 wing tip contract; forward loss reserves of $3.9 million on the Embraer Legacy 450/500 contracts and $1.3 million on the Boeing 777 wing tip contract; and inventory write-offs of $1.9 million on the Embraer Legacy 450/500 contracts.