Condensed Consolidated Statement of Cash Flows (Unaudited) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Operating Activities:
Net loss	$ (2,148)	$ (1,824)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	2,612	2,657
Gain on bargain purchase of acquisition		(54)
Stock based compensation	1,810	2,507
Share based expense	1,648
Loss on disposal/sale of property and equipment		7
Restructuring costs		467
Payment of withholding tax on stock based compensation	(1,223)	(679)
Deferred tax assets		(109)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	73	(2,695)
Inventories	(1,899)	(775)
Prepaid expenses and other assets	(383)	(927)
Accounts payable	2,101	769
Income taxes payable	(38)	(171)
Other accrued liabilities	(1,633)	729
Deferred revenue	(255)	866
Net cash provided by operating activities	665	768
Investing Activities:
Capital expenditures	(3,431)	(374)
Proceeds from disposal of property and equipment		10
Purchase of investments	(26,671)	(18,457)
Redemptions/maturities of short-term investments	32,063	18,395
Purchase of assets/businesses, net of cash acquired		(2,109)
Net cash provided by (used in) investing activities	1,961	(2,535)
Financing Activities:
Proceeds from issuance of common stock	286	230
Payments for repurchase of common stock	(259)	(1,300)
Net cash provided by (used in) financing activities	27	(1,070)
Net increase (decrease) in cash and cash equivalents	2,653	(2,837)
Effect of exchange rate changes on cash	27	(8)
Cash and cash equivalents, beginning of year	23,998	35,543
Cash and Cash Equivalents, End of Period	$ 26,678	$ 32,698