Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 53,927	$ 14,198
Accounts receivable	1,820	4,200
Inventory	15,358	8,082
Deposits on purchased inventory	5,516	2,522
Deferred cost of revenue	11,163	3,909
Prepaid expenses and other current assets	5,117	3,023
Total current assets	92,901	35,934
Property and equipment, net	11,388	11,560
Restricted cash	1,143	1,143
Intangible assets, net	87	97
Other assets	32	30
TOTAL ASSETS	105,551	48,764
Current liabilities:
Accounts payable	6,486	4,980
Accrued liabilities	7,486	6,334
Customer deposits	25,900	19,400
Deferred revenue, current portion	13,787	6,515
Total current liabilities	53,659	37,229
Deferred revenue, net of current portion	3,582	3,918
Long-term debt	44,412	44,290
Warrant liabilities	15,128	2,723
Other long-term liabilities	5,757	4,257
TOTAL LIABILITIES	122,538	92,417
Commitments and contingencies (Note 6)
Stockholders’ deficit:
Preferred stock, par value of $0.01 per share; 10,000,000 shares authorized at June 30, 2017 and December 31, 2016; no shares issued and outstanding at June 30, 2017 and December 31, 2016
Common stock, par value of $0.01 per share; 300,000,000 shares authorized at June 30, 2017 and December 31, 2016; 58,915,205 and 43,581,184 shares issued and outstanding at June 30, 2017 and December 31, 2016	579	426
Additional paid-in capital	266,425	203,598
Accumulated deficit	(283,991)	(247,677)
TOTAL STOCKHOLDERS’ DEFICIT	(16,987)	(43,653)
TOTAL LIABILITIES AND STOCKHOLDERS’ DEFICIT	$ 105,551	$ 48,764