Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 14,607	$ 20,667
Accounts receivable	300	830
Inventory	10,398	8,073
Deposits on purchased inventory	4,913	3,936
Deferred cost of revenue	10,220	8,782
Prepaid expenses and other current assets	2,209	1,329
Total current assets	42,647	43,617
Property and equipment, net	11,908	7,306
Restricted cash	1,143	943
Intangible assets, net	102	200
Other assets	31	91
TOTAL ASSETS	55,831	52,157
Current liabilities:
Accounts payable	1,679	4,358
Accrued liabilities	5,618	5,413
Customer deposits	14,300	12,763
Deferred revenue, current portion	12,006	5,616
Total current liabilities	33,603	28,150
Long-term debt, net	44,213	29,016
Deferred revenue	3,656	345
Warrant liability	4,372
Other long-term liabilities	3,496	1,603
TOTAL LIABILITIES	89,340	59,114
Commitments and contingencies (Note 6)
Stockholders’ deficit:
Common stock, par value of $0.01 per share; 300,000,000 shares authorized at September 30, 2016 and December 31, 2015; 43,354,677 and 38,204,960 shares issued and outstanding at September 30, 2016 and December 31, 2015	424	372
Preferred stock, par value of $0.01 per share; 10,000,000 shares authorized at September 30, 2016 and December 31, 2015; no shares issued and outstanding at September 30, 2016 and December 31, 2015
Additional paid-in capital	202,737	189,712
Accumulated deficit	(236,670)	(197,041)
TOTAL STOCKHOLDERS’ DEFICIT	(33,509)	(6,957)
TOTAL LIABILITIES AND STOCKHOLDERS’ DEFICIT	$ 55,831	$ 52,157