Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Net loss	$ (45,782)	$ (7,828)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization expense	15,184	14,370
Amortization of discount on convertible debt	3,842	967
Loss on disposal of long-lived assets	1,186	0
Write-off of deferred financing costs	0	1,976
Windfall tax benefit from option exercise	0	(382)
Deferred taxes	21,464	(258)
Changes in operating assets and liabilities:
Receivables	6,171	3,257
Inventories, net	(4,048)	(4,863)
Prepaid expenses	176	(67)
Income taxes, net	(33)	(4,251)
Accounts payable	2,265	2,943
Accrued expenses	8,125	2,393
Other	1,140	406
Net cash provided by operating activities	14,079	13,715
Cash flows from investing activities:
Acquisitions, net of cash acquired	(20,766)	(2,940)
Purchases of property and equipment	(12,152)	(5,329)
Capitalized software development costs	414	1,170
Net cash used in investing activities	(33,332)	(9,439)
Cash flows from financing activities:
Proceeds from issuance of convertible debt	0	149,500
Purchase of convertible note hedges	0	18,403
Issuance cost of convertible senior notes and revolving credit facility	0	6,446
Proceeds from revolver, net	0	(22,000)
Repayment of term note	0	(63,000)
Windfall tax benefit from option exercise	0	382
Proceeds from option and warrant exercises, net	4,623	385
Net cash provided by financing activities	4,623	40,418
Net (decrease) increase in cash and cash equivalents	(14,630)	44,694
Cash and cash equivalents at beginning of period	39,601	2,480
Cash and cash equivalents at end of period	24,971
Supplemental disclosure of cash flow information:
Cash paid for interest	3,850	1,676
Cash paid for taxes	97	71
Stock compensation	$ 4,389	$ 5,052