ASSETS AND LIABILITIES MEASURED AT FAIR VALUE (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016		Dec. 31, 2015
Assets at Fair Value [Abstract]
Impairment loss on intangible assets	$ 4,066	[1]	$ 0	[2]
Impairment loss on goodwill	24,302	[3]	0	[4]
Non-recurring Fair Value Measurement [Member]
Assets at Fair Value [Abstract]
Intangible assets, net	38,852	[1]	46,582	[2]
Goodwill	62,482	[3]	86,784	[4]
Non-recurring Fair Value Measurement [Member] | Level 1 [Member]
Assets at Fair Value [Abstract]
Intangible assets, net	0	[1]	0	[2]
Goodwill	0	[3]	0	[4]
Non-recurring Fair Value Measurement [Member] | Level 2 [Member]
Assets at Fair Value [Abstract]
Intangible assets, net	0	[1]	0	[2]
Goodwill	0	[3]	0	[4]
Non-recurring Fair Value Measurement [Member] | Level 3 [Member]
Assets at Fair Value [Abstract]
Intangible assets, net	38,852	[1]	46,582	[2]
Goodwill	62,482	[3]	$ 86,784	[4]
Engineering Services [Member]
Assets at Fair Value [Abstract]
Impairment loss on intangible assets	4,066
Impairment loss on goodwill	$ 24,302

[1] The fair values of intangibles relating to the acquisition of Valent was determined by third parties in connection with the purchase and recorded at those values. The intangibles relating to the Engineering Services reporting unit were deemed impaired during 2016 and a $4,066 impairment charge was recorded in the Consolidated Statements of Comprehensive Income (Loss) for the year ended December 31, 2016.

[2] The fair values of intangibles relating to the acquisitions of TASS and Valent were determined by third parties in connection with the purchase and recorded at those values.

[3] The Company performed its annual impairment analysis of goodwill related to the Aerostructures reporting units during the fourth quarter of 2016 and determined no adjustments to the carrying value were necessary. The value of the goodwill relating to the Engineering Services reporting unit was deemed impaired during 2016 and a $24,302 impairment charge was recorded in the Consolidated Statements of Comprehensive Income (Loss) for the year ended December 31, 2016.

[4] 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.