Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 93,547	$ 96,985
Restricted cash	1,905	2,036
Accounts receivable, net	19,273	13,501
Inventories, net	26,464	22,993
Prepaid inventories, net	1,912	1,027
Prepaids and other assets	12,897	12,651
Total current assets	155,998	149,193
Fixed assets, net	21,037	25,322
Goodwill	2,784	2,784
Other long-term assets, net	2,166	2,260
Total assets	181,985	179,559
Current liabilities:
Accounts payable	62,416	70,332
Accrued liabilities	47,674	47,902
Deferred revenue	38,411	27,978
Line of credit		17,000
Capital lease obligations, current		110
Total current liabilities	148,501	163,322
Capital lease obligations, non-current		2
Other long-term liabilities	2,522	2,998
Total liabilities	151,023	166,322
Commitments and contingencies (Note 13)
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 - 26,481 and 26,241; Outstanding shares - 23,451 and 23,279	2	2
Additional paid-in capital	356,895	353,368
Accumulated deficit	(247,096)	(261,765)
Treasury stock: Shares at cost - 3,030 and 2,962	(78,839)	(78,368)
Total stockholders' equity	30,962	13,237
Total liabilities and stockholders' equity	$ 181,985	$ 179,559