Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 36,910	$ 35,333
Short-term investments	0	8
Accounts receivable, net of allowance of $27 and $0 as of December 31, 2011 and 2010, respectively	6,264	5,078
Inventories, net	8,935	13,322
Prepaid expenses and other current assets	2,377	2,919
Total current assets	54,486	56,660
Property and equipment, net	5,717	5,114
Other long-term assets	4,089	4,983
Total assets	64,292	66,757
Current liabilities:
Accounts payable	6,327	13,381
Deferred revenue	3,500	1,836
Accrued liabilities and other	3,409	3,591
Total current liabilities	13,236	18,808
Other long-term liabilities	71	77
Total liabilities	13,307	18,885
Commitments and contingencies (Note 5 and Note 6)
Stockholders' equity:
Preferred stock, $0.001 par value; 1,000 shares authorized; no shares issued or outstanding	0	0
Common stock, $0.001 par value; authorized - 25,000; issued- 6,473 and 6,365 shares, respectively; outstanding - 6,361 and 6,273 shares as of December 31, 2011 and 2010, respectively	7	6
Treasury stock	(978)	(622)
Additional paid-in capital	807,829	803,160
Accumulated other comprehensive income	(1)	10
Accumulated deficit	(755,872)	(754,682)
Total stockholders' equity	50,985	47,872
Total liabilities and stockholders' equity	$ 64,292	$ 66,757