Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating Activities
Net (loss) income	$ (21)	$ 1,543
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation	538	552
Amortization	211	226
Provision for doubtful accounts	207	(1)
Deferred income taxes	161	(15)
Stock based compensation	329	210
Changes in operating assets and liabilities:
Accounts receivable	(7,494)	8,145
Inventories	(90)	(18)
Prepaid expenses, other current assets and other noncurrent assets	986	118
Accounts payable	(1,106)	(651)
Accrued liabilities and other noncurrent liabilities	(2,121)	(4,634)
Net cash (used in) provided by operating activities	(8,400)	5,475
Investing Activities
Purchases of property, equipment and patents	(555)	(788)
Net cash (used in) investing activities	(555)	(788)
Financing Activities
Payments to repurchase common stock		(1,889)
Acquisition of treasury stock	(101)
Net cash (used in) financing activities	(101)	(1,889)
Effect of exchange rate fluctuations on cash	(240)	28
Net (decrease) increase in cash and cash equivalents	(9,296)	2,826
Cash and cash equivalents at beginning of period	24,453	28,229
Cash and cash equivalents at end of period	$ 15,157	$ 31,055