CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Operating Activities:
Net income (loss)	$ (146)	$ 1,865
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	1,240	1,283
Stock-based compensation	751	624
(Gain) loss on disposal/sale of property and equipment	7	(2)
Payment of withholding tax on stock based compensation	(987)	(919)
Deferred tax provision	(91)	1,034
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	1,040	744
Inventories	(1,473)	737
Prepaid expenses and other assets	1,499	848
Accounts payable	(176)	(3,507)
Income taxes payable	(11)	(11)
Other accrued liabilities	(2,384)	(944)
Deferred revenue	(63)	(22)
Net cash provided by (used in) operating activities	(794)	1,730
Investing Activities:
Capital expenditures	(620)	(600)
Proceeds from disposal of property and equipment	0	2
Purchases of investments	(18,582)	(24,762)
Redemptions/maturities of short-term investments	14,993	21,951
Net cash used in investing activities	(4,209)	(3,409)
Financing Activities:
Proceeds from issuance of common stock	404	380
Cash dividends	(739)	(646)
Net cash used in financing activities	(335)	(266)
Net decrease in cash and cash equivalents	(5,338)	(1,945)
Effect of exchange rate changes on cash	23	(20)
Cash and cash equivalents, beginning of year	21,790	17,559
Cash and Cash Equivalents, End of Period	$ 16,475	$ 15,594