BUSINESS SEGMENT INFORMATION (Details) $ in Thousands	3 Months Ended											12 Months Ended
	Dec. 31, 2015 USD ($)		Sep. 30, 2015 USD ($)		Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)		Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2015 USD ($) segment		Dec. 31, 2014 USD ($)		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	$ 89,438		$ 95,633		$ 97,550	$ 92,475	$ 88,794	$ 97,335		$ 105,937	$ 95,751	$ 375,096		$ 387,817		$ 412,557
Gross profit	16,193	[1]	$ 16,626	[2]	$ 18,770	$ 17,197	16,732	$ 22,043	[3]	19,134	$ 17,461	68,786		75,370		79,862
(Loss) income from operations												20,786		(8,858)	[4]	(49,120)	[5],[6],[7]
Other Depreciation and Amortization												20,404		48,898	[4]	90,360	[5],[6],[7]
Interest expense												22,439		29,280		16,962
Capital expenditures												16,599		16,690		24,149
Total assets	415,980						432,614					415,980		432,614
Impairment loss on goodwill							26,439					0	[8]	26,439	[9]	73,528	[9]
Impairment loss on intangible assets												0	[10]	0	[11]
Debt issuance cost write-off										$ 8,340		0		8,466		0
Equipment acquired under capital lease												0		0		411
Aerostructures [Member]
Information about reported segments on the basis used internally to evaluate segment performance [Abstract]
Net sales												327,230		326,025		331,654
Gross profit												63,584		67,042		68,088
(Loss) income from operations												23,993		18,977		(46,050)	[5],[7]
Other Depreciation and Amortization												18,551		20,223		91,556	[7]
Interest expense												957		1,041		1,054
Capital expenditures												16,348		16,504		23,600	[12]
Total assets	379,873						389,867					379,873		389,867
Engineering Services [Member]
Information about reported segments on the basis used internally to evaluate segment performance [Abstract]
Net sales												49,096		63,404		83,717
Gross profit												5,286		8,428		12,145
(Loss) income from operations												(3,123)		(27,731)	[4]	(2,699)	[6]
Other Depreciation and Amortization												1,853		28,675	[4]	6,754	[6]
Interest expense												43		41		53
Capital expenditures												251		186		549
Total assets	$ 36,107						42,747					36,107		42,747
Impairment loss on intangible assets																4,222
Eliminations [Member]
Information about reported segments on the basis used internally to evaluate segment performance [Abstract]
Net sales												(1,230)		(1,612)		(2,814)
Gross profit												(84)		(100)		(371)
(Loss) income from operations												(84)		(104)		(371)	[5]
Corporate [Member]
Information about reported segments on the basis used internally to evaluate segment performance [Abstract]
Other Depreciation and Amortization												0				(7,950)	[5]
Interest expense												$ 21,439	[13]	28,198	[13]	15,855
Other Nonrecurring Income														0		7,950
Engineering Services [Member]
Information about reported segments on the basis used internally to evaluate segment performance [Abstract]
Impairment loss on goodwill							$ 26,439							$ 26,439
Valent Aerostructures, LLC [Member]
Information about reported segments on the basis used internally to evaluate segment performance [Abstract]
Impairment loss on goodwill																$ 73,528

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

[2] 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 included a net gain of $3,325 related to a legal settlement and $1,575 of restructuring expenses.

[3] Gross profit in the third quarter of 2014 includes a $5,286 favorable cumulative catch-up adjustment related to the settlement of an unpriced change order and the Company's ability to secure more favorable future material pricing on a long-term production contract. In addition, net income in the third quarter of 2014 includes $765 of restructuring expenses.

[4] Includes a charge of $26,439 for goodwill impairment in 2014.

[5] Includes a benefit of $7,950 related to the write-off of contingent consideration in 2013.

[6] Includes a charge of $4,222 for impairment of intangible assets in 2013.

[7] Includes a charge of $73,528 for goodwill impairment in 2013.

[8] 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.

[9] 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.

[10] The fair values of intangibles relating to the 2012 acquisitions of TASS and Valent were determined by third parties in connection with the purchase and recorded at those values.

[11] The fair values of intangibles relating to the 2012 acquisitions of TASS and Valent were determined by third parties in connection with the purchase and recorded at those values.

[12] Includes $411 associated with capital leases in 2013.

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