GOODWILL AND INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Goodwill and Intangible Assets [Line Items]
Goodwill, Impairment Loss	$ 26,439	$ 0	[1]	$ 26,439	[2]	$ 73,528	[2]
Intangible Assets [Abstract]
Trademarks	778	778		778
Customer intangible assets	68,991	68,991		68,991
Other	1,274	1,274		1,274
Accumulated amortization	(20,103)	(24,461)		(20,103)
Intangible assets, net	50,940	46,582		50,940
Amortization expense on intangible assets		4,359		4,524		4,647
Estimated annual amortization expense for these intangibles [Abstract]
2016		4,134
2017		3,915
2018		3,563
2019		3,263
2020		3,079
Thereafter		28,628
Intangible assets, net	$ 50,940	$ 46,582		$ 50,940
Customer Intangible Assets [Member]
Intangible Assets [Abstract]
Weighted average estimated useful life		18 years 6 months
Other [Member]
Intangible Assets [Abstract]
Weighted average estimated useful life		5 years 3 months 18 days
Valent Aerostructures, LLC [Member]
Goodwill and Intangible Assets [Line Items]
Goodwill, Impairment Loss						$ 73,528
Intec, TASS and Valent [Member] | Trademarks [Member]
Intangible Assets [Abstract]
Weighted average estimated useful life		4 years 6 months

[1] The Company performed its annual impairment analysis of goodwill during the fourth quarter of 2015 and determined no adjustments to the carrying value were necessary.

[2] During the fourth quarter of 2014, the Company performed its annual impairment analysis of goodwill. As a result of the analysis, the goodwill related to the Engineering Services reporting unit was deemed impaired, and a $26,439 impairment charge was recorded in the Consolidated Statements of Comprehensive Income (Loss) for the year ended December 31, 2014.