Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 30,733	$ 53,084
Accounts receivable, net of allowance of $0 and $6 as of September 30, 2014 and December 31, 2013, respectively	6,430	9,719
Inventories, net	32,487	20,186
Prepaid expenses and other current assets	3,902	4,202
Total current assets	73,552	87,191
Property and equipment, net	1,800	2,465
Goodwill	1,953	0
Other intangible assets, net	1,257	0
Other long-term assets	83	50
Total assets	78,645	89,706
Current liabilities:
Accounts payable	9,301	10,250
Deferred revenue	2,584	2,828
Accrued and other liabilities	4,063	6,661
Total current liabilities	15,948	19,739
Other long-term liabilities	1,037	0
Total liabilities	16,985	19,739
Commitments and contingencies (Note 8)
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 — 7,003 and 6,901 shares, as of September 30, 2014 and December 31, 2013, respectively; outstanding — 6,719 and 6,639 shares as of September 30, 2014 and December 31, 2013, respectively	7	7
Treasury stock	(3,827)	(3,479)
Additional paid-in capital	818,107	816,826
Accumulated other comprehensive income	16	16
Accumulated deficit	(752,643)	(743,403)
Total stockholders’ equity	61,660	69,967
Total liabilities and stockholders’ equity	$ 78,645	$ 89,706