Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Operating Activities:
Net loss	$ (1,248)	$ (560)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	2,624	2,612
Stock-based compensation	1,640	1,810
Share-based expense	39	60
Loss on disposal/sale of property and equipment	4	0
Payment of withholding tax on stock based compensation	(1,190)	(1,223)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	(240)	73
Inventories	166	(1,899)
Prepaid expenses and other assets	804	(383)
Accounts payable	638	2,101
Income taxes payable	(19)	(38)
Other accrued liabilities	(2,641)	(1,633)
Deferred revenue	38	(255)
Net cash provided by operating activities	615	665
Investing Activities:
Capital expenditures	(1,669)	(3,431)
Purchase of investments	(26,319)	(26,671)
Redemptions/maturities of short-term investments	37,478	32,063
Purchase of assets/businesses, net of cash acquired	(931)	0
Net cash provided by investing activities	8,559	1,961
Financing Activities:
Proceeds from issuance of common stock	294	286
Payments for repurchase of common stock	0	(259)
Cash dividend	(1,097)	0
Net cash provided by (used in) financing activities	(803)	27
Net increase in cash and cash equivalents	8,371	2,653
Effect of exchange rate changes on cash	1	27
Cash and cash equivalents, beginning of year	19,418	23,998
Cash and Cash Equivalents, End of Period	$ 27,790	$ 26,678