CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Sales and service revenue
Product sales	$ 324,133	$ 168,943	$ 161,435
Service revenues	88,424	109,686	92,605
Net sales	412,557	278,629	254,040
Cost of sales and service revenue
Cost of product sales	255,261	121,247	117,368
Cost of service revenues	77,434	89,074	77,022
Cost of sales	332,695	210,321	194,390
Gross profit	79,862	68,308	59,650
Selling, general and administrative expenses	55,862	36,891	33,563
Goodwill and intangible asset impairment	77,750	0	1,163
Contingent consideration write-off	(7,950)	0	0
Restructuring expense	3,073	0	0
Acquisitions expense	247	5,362	0
(Loss) income from operations	(49,120)	26,055	24,924
Other income (expense):
Interest expense	(16,962)	(1,771)	(669)
Other, net	618	356	(730)
Total other expense	(16,344)	(1,415)	(1,399)
(Loss) income before income taxes	(65,464)	24,640	23,525
(Benefit) provision for income taxes	(6,979)	8,153	7,136
Net (loss) income	(58,485)	16,487	16,389
Other comprehensive income (loss):
Change in foreign currency translation adjustment	(23)	(49)	0
Unrealized loss on interest rate hedges	(435)	0	0
Total comprehensive (loss) income	$ (58,943)	$ 16,438	$ 16,389
Amounts per common share:
Net (loss) income per common share (in dollars per share)	$ (4.64)	$ 1.41	$ 1.42
Net (loss) income per common share assuming dilution (in dollars per share)	$ (4.64)	$ 1.39	$ 1.40
Weighted average common shares outstanding (in shares)	12,607,833	11,701,607	11,559,895
Weighted average dilutive common shares outstanding (in shares)	12,607,833	11,839,182	11,741,513