Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 96,985	$ 124,021
Restricted cash	2,036	2,542
Accounts receivable, net	13,501	13,560
Inventories, net	22,993	32,114
Prepaid inventories, net	1,027	2,082
Prepaids and other assets	12,651	11,651
Total current assets	149,193	185,970
Fixed assets, net	25,322	27,800
Goodwill	2,784	2,784
Other long-term assets, net	2,260	1,405
Total assets	179,559	217,959
Current liabilities:
Accounts payable	70,332	67,311
Accrued liabilities	47,902	40,751
Deferred revenue	27,978	24,027
Convertible senior notes, net of debt discount - $0 and $141		34,484
Line of credit	17,000
Finance obligations, current		3,922
Capital lease obligations, current	110	729
Total current liabilities	163,322	171,224
Capital lease obligations, non-current	2	113
Finance obligations, non-current		12,219
Other long-term liabilities	2,998	3,175
Total liabilities	166,322	186,731
Commitments and contingencies (Note 13)
Redeemable common stock, $0.0001 par value: Outstanding - 0 and 46		570
Stockholders' equity:
Preferred stock, $0.0001 par value: Authorized shares - 5,000 Issued and outstanding shares - none
Common stock, $0.0001 par value: Authorized shares - 100,000 Issued shares - 26,241 and 25,877 Outstanding shares - 23,279 and 23,015	2	2
Additional paid-in capital	353,368	349,747
Accumulated deficit	(261,765)	(242,327)
Treasury stock: Shares at cost - 2,962 and 2,862	(78,368)	(76,764)
Total stockholders' equity	13,237	30,658
Total liabilities and stockholders' equity	$ 179,559	$ 217,959