Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Operating Activities:
NET LOSS	$ (1,111)	$ (345)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	1,331	1,303
Stock-based compensation	698	821
Share-based expense	39	29
Loss on disposal/sale of property and equipment	4
Payment of withholding tax on stock based compensation	(1,162)	(1,197)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	1,554	(562)
Inventories	664	(831)
Prepaid expenses and other assets	668	(793)
Accounts payable	312	2,093
Income taxes payable	(20)
Other accrued liabilities	(2,915)	(1,624)
Deferred revenue	(22)	(191)
Net cash provided by (used in) operating activities	40	(1,297)
Investing Activities:
Capital expenditures	(696)	(1,800)
Purchase of investments	(17,077)	(17,663)
Redemptions/maturities of short-term investments	16,400	15,405
Net cash used in investing activities	(1,373)	(4,058)
Financing Activities:
Proceeds from issuance of common stock	294	270
Cash dividend	(545)
Net cash (used in) provided by financing activities	(251)	270
Net decrease in cash and cash equivalents	(1,584)	(5,085)
Effect of exchange rate changes on cash	6	15
Cash and cash equivalents, beginning of year	19,418	23,998
Cash and Cash Equivalents, End of Period	$ 17,840	$ 18,928