CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 24,001	$ 35,333
Short-term investments		8
Accounts receivable, net of allowance of $9 and $0, respectively	5,355	5,078
Inventories	8,285	13,322
Prepaid expenses and other current assets	6,363	2,919
Total current assets	44,004	56,660
Property and equipment, net	5,452	5,114
Other long-term assets	4,195	4,983
Total assets	53,651	66,757
Current liabilities:
Accounts payable	4,479	13,381
Deferred revenue	2,445	1,836
Accrued liabilities and other	2,522	3,591
Total current liabilities	9,446	18,808
Other long-term liabilities	72	77
Total liabilities	9,518	18,885
Commitments and contingencies (Note 11)
Stockholders' equity:
Common stock, $0.001 par value; authorized - 25,000; issued- 6,458 and 6,365 shares, respectively; outstanding - 6,343 and 6,273 shares, respectively	6	6
Treasury stock	(977)	(622)
Additional paid-in capital	807,001	803,160
Accumulated other comprehensive income	3	10
Accumulated deficit	(761,900)	(754,682)
Total stockholders' equity	44,133	47,872
Total liabilities and stockholders' equity	$ 53,651	$ 66,757