Goodwill and Other Intangible Assets - Carrying Amount of Other Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 170,145	$ 170,145
Accumulated Amortization	47,978	37,618
Net Carrying Amount	122,167us-gaap_FiniteLivedIntangibleAssetsNet	132,527us-gaap_FiniteLivedIntangibleAssetsNet
Ducommun AeroStructures
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	19,300	19,300
Accumulated Amortization	13,046	11,330
Net Carrying Amount	6,254	7,970
Ducommun LaBarge Technologies
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	150,845	150,845
Accumulated Amortization	34,932	26,288
Net Carrying Amount	115,913	124,557
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets (in years)	18 years
Gross Carrying Amount	164,500	164,500
Accumulated Amortization	43,715	33,853
Net Carrying Amount	120,785	130,647
Trade names
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets (in years)	10 years
Gross Carrying Amount	3,400	3,400
Accumulated Amortization	3,060	2,720
Net Carrying Amount	340	680
Contract renewal
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets (in years)	14 years
Gross Carrying Amount	1,845	1,845
Accumulated Amortization	1,099	967
Net Carrying Amount	746	878
Technology
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets (in years)	15 years
Gross Carrying Amount	400	400
Accumulated Amortization	104	78
Net Carrying Amount	$ 296	$ 322

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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