Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets
Cash and cash equivalents	$ 78,889	$ 30,753
Restricted cash		825
Accounts receivable, net	36,868	42,794
Inventories, net	115,904	104,063
Prepaid expenses and other current assets	4,792	6,700
Total current assets	236,453	185,135
Property, plant and equipment, net	30,031	30,464
Long-term restricted cash	6,936
Other assets	14,860	12,055
Total assets	288,280	227,654
Current liabilities
Accounts payable	19,849	21,605
Accrued compensation	9,059	4,232
Warranty	3,363	1,352
Income taxes	143	196
Deferred revenue	7,863	6,782
Current portion of long-term debt		14,530
Other current liabilities	4,091	3,401
Total current liabilities	44,368	52,098
Sale leaseback obligation	47,586
Long-term deferred revenue	679	449
Other long-term liabilities	5,387	6,755
Total liabilities	$ 98,020	$ 59,302
Commitments and contingencies (Note 17)
Stockholders' equity
Preferred stock, $0.001 par value, 30,000 shares authorized; none issued or outstanding
Common stock, $0.001 par value, 300,000 shares authorized; 116,101 shares issued and 115,981 shares outstanding at December 31, 2015; 112,849 shares issued and 112,729 shares outstanding at December 31, 2014	$ 116	$ 113
Additional paid-in capital	529,002	519,068
Treasury stock, at cost, 120 shares at December 31, 2015 and 2014	(1,218)	(1,218)
Accumulated deficit	(336,209)	(350,887)
Accumulated other comprehensive income	(1,431)	1,276
Total stockholders' equity	190,260	168,352
Total liabilities and stockholders' equity	$ 288,280	$ 227,654