CONDENSED CONSOLIDATING STATEMENTS OF COMREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Thousands	3 Months Ended																12 Months Ended
	Dec. 31, 2015		Sep. 30, 2015		Jun. 30, 2015		Mar. 31, 2015		Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2015	Dec. 31, 2014		Dec. 31, 2013
Condensed Income Statements, Captions [Line Items]
Product sales																	$ 323,611	$ 321,284		$ 324,133
Service revenues																	51,485	66,533		88,424
Net sales	$ 89,438		$ 95,633		$ 97,550		$ 92,475		$ 88,794		$ 97,335		$ 105,937		$ 95,751		375,096	387,817		412,557
Cost of product sales																	259,610	254,775		255,261
Cost of service revenues																	46,700	57,672		77,434
Cost of sales																	306,310	312,447		332,695
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
Selling, general and administrative expenses																	45,678	55,204		55,862
Goodwill and intangible asset impairment																	0	26,439		77,750
Contingent consideration write-off																	0	0		(7,950)
Restructuring expense																	2,322	2,585		3,073
Acquisitions expense																	0	0		247
Income (loss) from operations																	20,786	(8,858)	[4]	(49,120)	[5],[6],[7]
Interest expense																	(22,439)	(29,280)		(16,962)
Other, net																	(236)	223		618
(Loss) Income from equity investments in subsidiaries																	0	0		0
Total other expense																	(22,675)	(29,057)		(16,344)
Loss before income taxes																	(1,889)	(37,915)		(65,464)
Provision (benefit) for income taxes									(6,396)								352	(8,953)		(6,979)
Net loss	$ (1,188)	[1]	$ 34	[2]	$ 378	[8]	$ (1,465)	[9]	$ (22,505)	[10]	$ 1,396	[3]	$ (7,411)	[11]	$ (442)	[12]	(2,241)	(28,962)		(58,485)
Change in foreign currency translation adjustment																	(41)	(98)		(23)
Reclassification adjustment for losses on interest rate hedges included in net earnings																	0	278		0
Unrealized gain/(loss) arising during period from interest rate hedges, net of tax of $0, $0 and $(157)																	0	0		(278)
Total comprehensive loss																	(2,282)	(28,782)		(58,786)
LMIA(Guarantor Parent)
Condensed Income Statements, Captions [Line Items]
Product sales																	239	466		4,388
Service revenues																	36,184	36,181		41,578
Net sales																	36,423	36,647		45,966
Cost of product sales																	248	699		4,290
Cost of service revenues																	35,952	35,998		41,533
Cost of sales																	36,200	36,697		45,823
Gross profit																	223	(50)		143
Selling, general and administrative expenses																	0	792		0
Goodwill and intangible asset impairment																		0		0
Contingent consideration write-off																				(7,950)
Restructuring expense																	340	1,012		4
Acquisitions expense																				229
Income (loss) from operations																	(117)	(1,854)		7,860
Interest expense																	(21,449)	(28,224)		(15,887)
Other, net																	0	11		95
(Loss) Income from equity investments in subsidiaries																	19,284	(8,860)		(52,278)
Total other expense																	(2,165)	(37,073)		(68,070)
Loss before income taxes																	(2,282)	(38,927)		(60,210)
Provision (benefit) for income taxes																	0	(9,867)		(1,702)
Net loss																	(2,282)	(29,060)		(58,508)
Change in foreign currency translation adjustment																	0	0		0
Reclassification adjustment for losses on interest rate hedges included in net earnings																		278
Unrealized gain/(loss) arising during period from interest rate hedges, net of tax of $0, $0 and $(157)																				(278)
Total comprehensive loss																	(2,282)	(28,782)		(58,786)
Guarantor Subsidiaries
Condensed Income Statements, Captions [Line Items]
Product sales																	323,337	321,286		324,455
Service revenues																	51,720	66,543		88,141
Net sales																	375,057	387,829		412,596
Cost of product sales																	259,327	254,544		255,681
Cost of service revenues																	47,166	57,864		77,124
Cost of sales																	306,493	312,408		332,805
Gross profit																	68,564	75,421		79,791
Selling, general and administrative expenses																	45,678	54,412		55,934
Goodwill and intangible asset impairment																		26,439		77,750
Contingent consideration write-off																				0
Restructuring expense																	1,982	1,573		3,069
Acquisitions expense																				18
Income (loss) from operations																	20,904	(7,003)		(56,980)
Interest expense																	(990)	(1,056)		(1,075)
Other, net																	(236)	212		523
(Loss) Income from equity investments in subsidiaries																	0	0		0
Total other expense																	(1,226)	(844)		(552)
Loss before income taxes																	19,678	(7,847)		(57,532)
Provision (benefit) for income taxes																	352	914		(5,277)
Net loss																	19,326	(8,761)		(52,255)
Change in foreign currency translation adjustment																	(41)	(98)		(23)
Reclassification adjustment for losses on interest rate hedges included in net earnings																		0
Unrealized gain/(loss) arising during period from interest rate hedges, net of tax of $0, $0 and $(157)																				0
Total comprehensive loss																	19,285	(8,859)		(52,278)
Consolidating/Eliminating Entries
Condensed Income Statements, Captions [Line Items]
Product sales																	35	(468)		(4,710)
Service revenues																	(36,419)	(36,191)		(41,295)
Net sales																	(36,384)	(36,659)		(46,005)
Cost of product sales																	35	(468)		(4,710)
Cost of service revenues																	(36,418)	(36,190)		(41,223)
Cost of sales																	(36,383)	(36,658)		(45,933)
Gross profit																	(1)	(1)		(72)
Selling, general and administrative expenses																	0	0		(72)
Goodwill and intangible asset impairment																		0		0
Contingent consideration write-off																				0
Restructuring expense																	0	0		0
Acquisitions expense																				0
Income (loss) from operations																	(1)	(1)		0
Interest expense																	0	0		0
Other, net																	0	0		0
(Loss) Income from equity investments in subsidiaries																	(19,284)	8,860		52,278
Total other expense																	(19,284)	8,860		52,278
Loss before income taxes																	(19,285)	8,859		52,278
Provision (benefit) for income taxes																	0	0		0
Net loss																	(19,285)	8,859		52,278
Change in foreign currency translation adjustment																	0	0		0
Reclassification adjustment for losses on interest rate hedges included in net earnings																		0
Unrealized gain/(loss) arising during period from interest rate hedges, net of tax of $0, $0 and $(157)																				0
Total comprehensive loss																	$ (19,285)	$ 8,859		$ 52,278

[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] Included in the net loss 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.

[10] Net loss in the fourth quarter of 2014 includes a $26,439 goodwill impairment charge related to the Engineering Services reporting unit, $297 of restructuring expenses and a $6,396 income tax benefit resulting from the decision to carry the 2014 tax loss back to previous years.

[11] Net loss in the second quarter of 2014 includes $793 of interest expense related to the termination of interest rate derivatives and $8,340 related to the write-off of debt issuance costs associated with the modification of the Company's revolving credit facility and the termination of its long-term credit agreement. Net loss in the second quarter of 2014 also includes $1,095 of restructuring expenses.

[12] Included in the net loss for the the first quarter of 2014 were $428 of restructuring expenses.