Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating Activities
Net income	$ 4,695	$ 2,805
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation	1,662	1,644
Amortization	636	680
Bad debt expense (recovery)	475	(113)
Deferred income taxes	(16)	(170)
Stock-based compensation	1,207	844
Changes in operating assets and liabilities:
Accounts receivable	(13,333)	4,890
Inventories	(19)	(646)
Prepaid expenses, other current assets and other non-current assets	1,708	741
Accounts payable	1,489	(653)
Accrued liabilities and other non-current liabilities	880	(3,488)
Net cash (used in) provided by operating activities	(616)	6,534
Investing Activities
Purchases of property, equipment and patents	(1,611)	(2,071)
Net cash used in investing activities	(1,611)	(2,071)
Financing Activities
Payments to repurchase common stock	0	(7,889)
Proceeds from short-term borrowings	1,608	0
Acquisition of treasury stock	(351)	0
Net cash provided by (used in) financing activities	1,257	(7,889)
Effect of exchange rate fluctuations on cash	189	(320)
Net decrease in cash and cash equivalents	(781)	(3,746)
Cash and cash equivalents at beginning of period	24,453	28,229
Cash and cash equivalents at end of period	$ 23,672	$ 24,483