GOODWILL AND INTANGIBLE ASSETS, GOODWILL (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Goodwill [Line Items]
Gross Goodwill	$ 192,694		$ 192,694		$ 192,694
Accumulated impairment loss	(105,910)		(105,910)		(105,910)
Net Goodwill	86,784		86,784		86,784
Impairment loss on goodwill	26,439		0	[1]	26,439	[2]	$ 73,528	[2]
Aerostructures [Member]
Goodwill [Line Items]
Gross Goodwill	141,953		141,953		141,953
Accumulated impairment loss	(79,471)		(79,471)		(79,471)
Net Goodwill	62,482		62,482		62,482
Engineering Services [Member]
Goodwill [Line Items]
Gross Goodwill	50,741		50,741		50,741
Accumulated impairment loss	(26,439)		(26,439)		(26,439)
Net Goodwill	24,302		24,302		24,302
Integrated Technologies, Inc. [Member]
Goodwill [Line Items]
Net Goodwill			6,194
Valent Aerostructures, LLC [Member]
Goodwill [Line Items]
Adjustment to loss provision on long-term production contract		$ 5,267
Impairment loss on goodwill							$ 73,528
Valent Aerostructures, LLC [Member] | Aerostructures [Member]
Goodwill [Line Items]
Net Goodwill			56,288
Engineering Services [Member]
Goodwill [Line Items]
Net Goodwill			$ 24,302
Impairment loss on goodwill	$ 26,439				$ 26,439

[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.