Goodwill and Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Goodwill [Abstract]
Goodwill acquired	$ 180,933		$ 180,933		$ 179,314
Intangible Assets [Abstract]
Increase in goodwill and deferred tax liability			1,520
Trademarks	778		778		5,000
Customer intangible assets	68,991		68,991		68,991
Other	1,481		1,481		1,481
Accumulated amortization	(13,461)		(13,461)		(11,138)
Intangible assets, net	57,789		57,789		64,334
Amortization expense on intangible assets	1,162	494	2,323	987
Impairment of Intangible Assets (Excluding Goodwill)	4,222		4,222
Customer Intangible Assets [Member]
Intangible Assets [Abstract]
Accumulated amortization	12,457		12,457		10,360
Other [Member]
Intangible Assets [Abstract]
Accumulated amortization	636		636		517
Trademarks [Member]
Intangible Assets [Abstract]
Accumulated amortization	368		368		261
D3 Technologies, Inc. [Member]
Goodwill [Abstract]
Goodwill acquired	44,428		44,428		42,908
Intangible Assets [Abstract]
Indefinite-Lived Trademarks					4,222
Integrated Technologies, Inc. [Member]
Goodwill [Abstract]
Goodwill acquired	6,194		6,194		6,194
TASS, Inc. [Member]
Goodwill [Abstract]
Goodwill acquired	6,513		6,513		6,628
Valent Aerostructures, LLC [Member]
Goodwill [Abstract]
Goodwill acquired	$ 123,798		$ 123,798		$ 123,584