Condensed Consolidating Statements of Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Condensed Income Statements, Captions [Line Items]
Product sales	$ 78,457	$ 76,484
Service revenue	14,018	19,267
Net sales	92,475	95,751
Cost of product sales	62,551	62,100
Cost of service revenue	12,727	16,190
Cost of sales	75,278	78,290
Gross profit	17,197	17,461
Selling, general and administrative expenses	12,609	13,344
Goodwill and intangible asset impairment	0	0
Contingent consideration write-off	0	0
Restructuring expense	275	428
Acquisitions expense	0	0
Income from operations	4,313	3,689
Interest expense	(5,591)	(4,259)
Other, net	122	112
Income (loss) from equity investments in subsidiaries	0	0
Total other expense	(5,469)	(4,147)
Loss before income taxes	(1,156)	(458)
Provision (benefit) for income taxes	309	(16)
Net loss	(1,465)	(442)
Change in foreign currency translation adjustment	(79)	44
Reclassification adjustment for losses on interest rate hedges included in net earnings	0	0
Unrealized loss arising during period from interest rate hedges, net of tax of $0 for the three months ended March 31, 2014	0	(129)
Total comprehensive loss	(1,544)	(527)
LMIA(Guarantor Parent)
Condensed Income Statements, Captions [Line Items]
Product sales	18	480
Service revenue	9,213	10,149
Net sales	9,231	10,629
Cost of product sales	16	699
Cost of service revenue	9,232	9,600
Cost of sales	9,248	10,299
Gross profit	(17)	330
Selling, general and administrative expenses	129	22
Goodwill and intangible asset impairment	0	0
Contingent consideration write-off	0	0
Restructuring expense	89	294
Acquisitions expense	0	0
Income from operations	(235)	14
Interest expense	(5,319)	(3,966)
Other, net	2	28
Income (loss) from equity investments in subsidiaries	2,411	2,196
Total other expense	(2,906)	(1,742)
Loss before income taxes	(3,141)	(1,728)
Provision (benefit) for income taxes	(1,676)	(1,286)
Net loss	(1,465)	(442)
Change in foreign currency translation adjustment	0	0
Reclassification adjustment for losses on interest rate hedges included in net earnings	0	0
Unrealized loss arising during period from interest rate hedges, net of tax of $0 for the three months ended March 31, 2014	0	(129)
Total comprehensive loss	(1,465)	(571)
Guarantor Subsidiaries
Condensed Income Statements, Captions [Line Items]
Product sales	78,457	76,484
Service revenue	13,993	19,279
Net sales	92,450	95,763
Cost of product sales	62,553	61,881
Cost of service revenue	12,683	16,751
Cost of sales	75,236	78,632
Gross profit	17,214	17,131
Selling, general and administrative expenses	12,480	13,322
Goodwill and intangible asset impairment	0	0
Contingent consideration write-off	0	0
Restructuring expense	186	134
Acquisitions expense	0	0
Income from operations	4,548	3,675
Interest expense	(272)	(293)
Other, net	120	84
Income (loss) from equity investments in subsidiaries	0	0
Total other expense	(152)	(209)
Loss before income taxes	4,396	3,466
Provision (benefit) for income taxes	1,985	1,270
Net loss	2,411	2,196
Change in foreign currency translation adjustment	(79)	44
Reclassification adjustment for losses on interest rate hedges included in net earnings	0	0
Unrealized loss arising during period from interest rate hedges, net of tax of $0 for the three months ended March 31, 2014	0	0
Total comprehensive loss	2,332	2,240
Consolidating/Eliminating Entries
Condensed Income Statements, Captions [Line Items]
Product sales	(18)	(480)
Service revenue	(9,188)	(10,161)
Net sales	(9,206)	(10,641)
Cost of product sales	(18)	(480)
Cost of service revenue	(9,188)	(10,161)
Cost of sales	(9,206)	(10,641)
Gross profit	0	0
Selling, general and administrative expenses	0	0
Goodwill and intangible asset impairment	0	0
Contingent consideration write-off	0	0
Restructuring expense	0	0
Acquisitions expense	0	0
Income from operations	0	0
Interest expense	0	0
Other, net	0	0
Income (loss) from equity investments in subsidiaries	(2,411)	(2,196)
Total other expense	(2,411)	(2,196)
Loss before income taxes	(2,411)	(2,196)
Provision (benefit) for income taxes	0	0
Net loss	(2,411)	(2,196)
Change in foreign currency translation adjustment	0	0
Reclassification adjustment for losses on interest rate hedges included in net earnings	0	0
Unrealized loss arising during period from interest rate hedges, net of tax of $0 for the three months ended March 31, 2014	0	0
Total comprehensive loss	$ (2,411)	$ (2,196)