CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities from operations:
Net Loss	$ (7,217)	$ (9,177)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,487	1,765
Stock-based compensation expense	3,085	1,951
Provision for bad debts	9
Provision for excess and obsolete inventory	83	57
Gain on sale of assets	(66)	(1,391)
Changes in assets and liabilities:
Accounts receivable	(286)	434
Inventories	4,953	(10,999)
Prepaid expenses and other assets	(2,558)	(2,452)
Accounts payable	(8,902)	3,338
Accrued restructuring liabilities		(1,238)
Deferred revenue	609	611
Accrued liabilities and other	(1,069)	(1,248)
Other long-term liabilities	(6)	(14)
Net cash used in operating activities	(9,878)	(18,363)
Cash flows from investing activities from operations:
Change in restricted cash		1,000
Purchase of property and equipment	(1,829)	(3,860)
Proceeds from sales of intangible assets, net		1,040
Purchase of intangible assets	(20)	(122)
Maturities or sale of marketable securities		10,207
Acquistion of a business, net of cash acquired		(1,000)
Net cash (used in) provided by investing activities from operations:	(1,849)	7,265
Cash flows from financing activities from operations:
Proceeds from issuance of common stock	757	252
Repurchase of common stock	(355)	(118)
Net cash provided by financing activities from operations:	402	134
Effect of exchange rate changes on cash and cash equivalents	(7)	(4)
Net decrease in cash and cash equivalents	(11,332)	(10,968)
Cash and cash equivalents, beginning of period	35,333	28,943
Cash and cash equivalents, end of period	$ 24,001	$ 17,975