Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net loss	$ (2,077)	$ (2,737)
Adjustments to reconcile net loss to net cash provided by operating activities:
Change in allowance for doubtful accounts	(303)	200
Change in the fair value of acquisition-related contingent consideration	100	(93)
Amortization of the fair value adjustment related to warranty liabilities acquired through acquisitions	(8)	(12)
Amortization of deferred financing fees	155	110
Depreciation and amortization	8,959	6,455
Stock-based compensation	1,386	1,131
Foreign exchange loss (gain)	351	(532)
Deferred income taxes	203	432
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	(1,096)	10,946
Inventories	(864)	(3,004)
Prepaid expenses and other assets	(969)	(1,351)
Accounts payable and accrued liabilities	(877)	(6,538)
Deferred revenue	(1,178)	(318)
Other liabilities	(118)	130
Net cash provided by operating activities	3,664	4,819
Cash flows from investing activities:
Acquisition of businesses, net of cash acquired		(133,707)
Capital expenditures	(9,835)	(4,171)
Cash held for acquisition		123,000
Net cash used in investing activities	(9,835)	(14,878)
Cash flows from financing activities:
Proceeds received from issuance of long-term debt		10,000
Cash paid for debt issuance costs		(842)
Proceeds received from exercise of stock options		244
Principal payment of note payable		(10,000)
Principal payments of capital leases		(24)
Net cash used in financing activities		(622)
Effect of exchange rate changes on cash and cash equivalents	252	(192)
Net decrease in cash and cash equivalents	(5,919)	(10,873)
Beginning of period	27,077	91,565
End of period	21,158	80,692
Cash paid for
Interest	2,198	2,332
Income taxes	138	364
Noncash investing and financing activities:
Capital expenditures incurred not yet paid	3,777	3,186
Capital expenditure milestone payable incurred not yet paid	5,070	5,460
Stock-based compensation related to capital expenditures	$ 66	28
Series A convertible preferred stock dividend paid in kind		9
Common stock issued as payment for MPUs		358
Acquisition-related contingent consideration		$ 542