CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities from operations:
Net loss	$ (4,527)	$ (5,327)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,056	1,089
Stock-based compensation expense	1,913	1,430
Provision for bad debts	3	0
Provision for excess and obsolete inventory	221	14
Loss on sale of assets	0	18
Non-cash restructuring expense	0	(101)
Changes in assets and liabilities:
Accounts receivable	(1,738)	(395)
Inventories	3,790	(1,629)
Prepaid expenses and other assets	(1,165)	83
Accounts payable	(8,695)	(844)
Accrued restructuring liabilities	0	(1,137)
Deferred revenue	832	261
Accrued liabilities and other	(1,668)	(1,477)
Other long-term liabilities	4	(9)
Net cash used in operating activities	(9,974)	(8,024)
Cash flows from investing activities from operations:
Change in restricted cash	0	1,000
Purchase of property and equipment	(921)	(3,063)
Purchase of intangible assets	0	(122)
Maturities or sale of marketable securities	0	7,200
Acquistion of a business, net of acquired	0	(1,000)
Net cash (used in) provided by investing activities from operations:	(921)	4,015
Cash flows from financing activities from operations:
Proceeds from issuance of common stock	679	141
Repurchase of common stock	(189)	(98)
Net cash provided by financing activities from operations:	490	43
Effect of exchange rate changes on cash and cash equivalents	(5)	(6)
Net decrease in cash and cash equivalents	(10,410)	(3,972)
Cash and cash equivalents, beginning of period	35,333	28,943
Cash and cash equivalents, end of period	$ 24,923	$ 24,971