CONDENSED CONSOLIDATING STATEMENTS OF COMREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Thousands	3 Months Ended															12 Months Ended
	Dec. 31, 2016		Sep. 30, 2016	Jun. 30, 2016		Mar. 31, 2016		Dec. 31, 2015		Sep. 30, 2015		Jun. 30, 2015		Mar. 31, 2015		Dec. 31, 2016		Dec. 31, 2015	Dec. 31, 2014
Condensed Income Statements, Captions [Line Items]
Product sales																$ 308,089		$ 323,611	$ 321,284
Service revenues																38,091		51,485	66,533
Net sales	$ 85,183		$ 89,673	$ 83,993		$ 87,331		$ 89,438		$ 95,633		$ 97,550		$ 92,475		346,180		375,096	387,817
Cost of product sales																249,227		259,610	254,775
Cost of service revenues																37,150		46,700	57,672
Cost of sales																286,377		306,310	312,447
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
Selling, general and administrative expenses																44,541		45,678	55,204
Goodwill and intangible asset impairment																28,368		0	26,439
Restructuring expense																1,212		2,322	2,585
Goodwill and Intangible Asset Impairment				28,368												28,368
(Loss) income from operations																(14,318)	[4]	20,786	(8,858)	[4]
Interest expense																(21,171)		(22,439)	(29,280)	[5]
Other, net																(352)		(236)	223
Income (loss) from equity investments in subsidiaries																0		0	0
Total other expense																(21,523)		(22,675)	(29,057)
Loss before income taxes																(35,841)		(1,889)	(37,915)
(Benefit) provision for income taxes																(734)		352	(8,953)
Net loss	$ (3,757)	[1]	$ 309	$ (29,900)	[6]	$ (1,759)	[7]	$ (1,188)	[2]	$ 34	[3]	$ 378	[8]	$ (1,465)	[9]	(35,107)		(2,241)	(28,962)
Change in foreign currency translation adjustment																(71)		(41)	(98)
Reclassification adjustment for losses on interest rate hedges included in net earnings																0		0	278
Unrealized gain/(loss) arising during period from interest rate hedges, net of tax of $0, $0 and $(157)																			278
Total comprehensive loss																(35,178)		(2,282)	(28,782)
LMIA(Guarantor Parent)
Condensed Income Statements, Captions [Line Items]
Product sales																(170)		239	466
Service revenues																40,864		36,184	36,181
Net sales																40,694		36,423	36,647
Cost of product sales																86		248	699
Cost of service revenues																42,749		35,952	35,998
Cost of sales																42,835		36,200	36,697
Gross profit																(2,141)		223	(50)
Selling, general and administrative expenses																0		0	792
Goodwill and intangible asset impairment																			0
Restructuring expense																431		340	1,012
Goodwill and Intangible Asset Impairment																0
(Loss) income from operations																(2,572)		(117)	(1,854)
Interest expense																(20,336)		(21,449)	(28,224)
Other, net																5		0	11
Income (loss) from equity investments in subsidiaries																(12,275)		19,284	(8,860)
Total other expense																(32,606)		(2,165)	(37,073)
Loss before income taxes																(35,178)		(2,282)	(38,927)
(Benefit) provision for income taxes																0		0	(9,867)
Net loss																(35,178)		(2,282)	(29,060)
Change in foreign currency translation adjustment																0		0	0
Unrealized gain/(loss) arising during period from interest rate hedges, net of tax of $0, $0 and $(157)																			278
Total comprehensive loss																(35,178)		(2,282)	(28,782)
Guarantor Subsidiaries
Condensed Income Statements, Captions [Line Items]
Product sales																307,954		323,337	321,286
Service revenues																38,217		51,720	66,543
Net sales																346,171		375,057	387,829
Cost of product sales																248,836		259,327	254,544
Cost of service revenues																35,391		47,166	57,864
Cost of sales																284,227		306,493	312,408
Gross profit																61,944		68,564	75,421
Selling, general and administrative expenses																44,541		45,678	54,412
Goodwill and intangible asset impairment																			26,439
Restructuring expense																781		1,982	1,573
Goodwill and Intangible Asset Impairment																28,368
(Loss) income from operations																(11,746)		20,904	(7,003)
Interest expense																(835)		(990)	(1,056)
Other, net																(357)		(236)	212
Income (loss) from equity investments in subsidiaries																0		0	0
Total other expense																(1,192)		(1,226)	(844)
Loss before income taxes																(12,938)		19,678	(7,847)
(Benefit) provision for income taxes																(734)		352	914
Net loss																(12,204)		19,326	(8,761)
Change in foreign currency translation adjustment																(71)		(41)	(98)
Unrealized gain/(loss) arising during period from interest rate hedges, net of tax of $0, $0 and $(157)																			0
Total comprehensive loss																(12,275)		19,285	(8,859)
Consolidating/Eliminating Entries
Condensed Income Statements, Captions [Line Items]
Product sales																305		35	(468)
Service revenues																(40,990)		(36,419)	(36,191)
Net sales																(40,685)		(36,384)	(36,659)
Cost of product sales																305		35	(468)
Cost of service revenues																(40,990)		(36,418)	(36,190)
Cost of sales																(40,685)		(36,383)	(36,658)
Gross profit																0		(1)	(1)
Selling, general and administrative expenses																0		0	0
Goodwill and intangible asset impairment																			0
Restructuring expense																0		0	0
Goodwill and Intangible Asset Impairment																0
(Loss) income from operations																0		(1)	(1)
Interest expense																0		0	0
Other, net																0		0	0
Income (loss) from equity investments in subsidiaries																12,275		(19,284)	8,860
Total other expense																12,275		(19,284)	8,860
Loss before income taxes																12,275		(19,285)	8,859
(Benefit) provision for income taxes																0		0	0
Net loss																12,275		(19,285)	8,859
Change in foreign currency translation adjustment																0		0	0
Unrealized gain/(loss) arising during period from interest rate hedges, net of tax of $0, $0 and $(157)																			0
Total comprehensive loss																$ 12,275		$ (19,285)	$ 8,859

[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] Included in the net loss for the the second quarter of 2016 was a $28,368 charge for goodwill and intangible asset impairment related to the Engineering Services reporting unit and $241 of restructuring expenses.

[7] Included in the net loss for the the first quarter of 2016 were $947 of restructuring expenses.

[8] Included in the net income for the the second quarter of 2015 were $518 of restructuring expenses.

[9] Included in the net loss for the the first quarter of 2015 were $275 of restructuring expenses.