BUSINESS SEGMENT INFORMATION (Details) $ in Thousands		3 Months Ended											12 Months Ended
		Dec. 31, 2016 USD ($)		Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)		Sep. 30, 2015 USD ($)		Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2016 USD ($) segment		Dec. 31, 2015 USD ($)		Dec. 31, 2014 USD ($)		Dec. 31, 2013 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment													2
Information about reported segments on the basis used internally to evaluate segment performance [Abstract]
Net sales		$ 85,183		$ 89,673	$ 83,993	$ 87,331	$ 89,438		$ 95,633		$ 97,550	$ 92,475	$ 346,180		$ 375,096		$ 387,817
Gross profit		12,192	[1]	$ 15,846	$ 15,535	$ 16,230	16,193	[2]	$ 16,626	[3]	$ 18,770	$ 17,197	59,803		68,786		75,370
(Loss) income from operations													(14,318)	[4]	20,786		(8,858)	[4]
Other Depreciation and Amortization													47,411	[4]	20,404		48,898	[4]
Interest expense													21,171		22,439		29,280	[5]
Capital expenditures													11,813		16,599		16,690
Total assets		383,632					415,980						383,632		415,980
Impairment loss on goodwill													24,302	[6]	0	[7]
Impairment loss on intangible assets													4,066	[8]	0	[9]
Debt issuance cost write-off													0		0		8,466
Aerostructures [Member]
Information about reported segments on the basis used internally to evaluate segment performance [Abstract]
Net sales													311,131		327,230		326,025
Gross profit													56,774		63,584		67,042
(Loss) income from operations													16,153		23,993		18,977
Other Depreciation and Amortization													18,069		18,551		20,223
Interest expense													807		957		1,041
Capital expenditures													11,748		16,348		16,504
Total assets		377,214					379,873						377,214		379,873
Engineering Services [Member]
Information about reported segments on the basis used internally to evaluate segment performance [Abstract]
Net sales													36,301		49,096		63,404
Gross profit													3,372		5,286		8,428
(Loss) income from operations													(30,128)	[4]	(3,123)		(27,731)	[4]
Other Depreciation and Amortization													29,342	[4]	1,853		28,675	[4]
Interest expense													33		43		41
Capital expenditures													65		251		186
Total assets		$ 6,418					$ 36,107						6,418		36,107
Impairment loss on goodwill													24,302
Impairment loss on intangible assets													4,066
Eliminations [Member]
Information about reported segments on the basis used internally to evaluate segment performance [Abstract]
Net sales													(1,252)		(1,230)		(1,612)
Gross profit													(343)		(84)		(100)
(Loss) income from operations													(343)		(84)		(104)
Corporate [Member]
Information about reported segments on the basis used internally to evaluate segment performance [Abstract]
Interest expense													20,331		$ 21,439		28,198	[5]
Engineering Services [Member]
Information about reported segments on the basis used internally to evaluate segment performance [Abstract]
Impairment loss on goodwill													24,302	[4]			$ 26,439
Impairment loss on intangible assets													$ 4,066
Valent Aerostructures, LLC [Member]
Information about reported segments on the basis used internally to evaluate segment performance [Abstract]
Impairment loss on goodwill	[7]																		$ 73,528

[1] Gross profit in the fourth quarter of 2016 includes an unfavorable cumulative catch-up adjustment of $1,741 related to a long-term contract.

[2] Gross profit in the fourth quarter of 2015 includes an unfavorable cumulative catch-up adjustment of $1,010 related to a long-term contract. Net loss for the fourth quarter of 2015 also includes a restructuring benefit of $46.

[3] Gross profit in the third quarter of 2015 includes an unfavorable adjustment of $1,738 related to a long-term contract for which a forward loss reserve was established. Net income for the the third quarter of 2015 also included a net gain of $3,325 related to a legal settlement and $1,575 of restructuring expenses.

[4] Includes charges of $4,066 for intangible asset impairment and $24,302 for goodwill impairment in 2016. Includes charges of $26,439 for goodwill impairment in 2014.

[5] Includes $8,466 related to the write-off of deferred financing costs and $793 related to the settlement of debt derivatives associated with the Company's refinancing of its debt in 2014.

[6] 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.

[7] 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.

[8] 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.

[9] 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.