Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Operating Activities
Net income (loss)	$ (3,314)	$ (614)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	1,560	1,372
Amortization	1,607	1,034
Gain on disposal of equipment	(26)	0
Allowance for doubtful accounts	(43)	(205)
Deferred income taxes	(834)	(82)
Stock-based compensation	1,320	1,694
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	1,958	4,291
Inventories	(331)	(617)
Prepaid expenses, other current assets and other non-current assets	313	(874)
Accounts payable	896	(1,805)
Accrued liabilities and other non-current liabilities	(4,180)	(2,791)
Net cash (used in) provided by operating activities	(1,074)	1,403
Investing Activities
Purchases of property, equipment and patents	(523)	(2,141)
Proceeds from the sale of equipment	26	0
Payment for intangible assets	0	(3,010)
Payment for acquisitions, net of cash acquired	0	(8,079)
Net cash used in investing activities	(497)	(13,230)
Financing Activities
Payments on short-term borrowings	(1,623)	0
Proceeds from exercises of stock options	0	297
Excess tax benefit from exercises of stock options	0	7
Treasury shares withheld	(252)	(267)
Net cash (used in) provided by financing activities	(1,875)	37
Effect of exchange rate fluctuations on cash	(793)	(405)
Net decrease in cash and cash equivalents	(4,239)	(12,195)
Cash and cash equivalents at beginning of period	18,637	27,738
Cash and cash equivalents at end of period	$ 14,398	$ 15,543