Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 34,413	$ 14,198
Accounts receivable	1,042	4,200
Inventory	18,453	8,082
Deposits on purchased inventory	6,115	2,522
Deferred cost of revenue	10,390	3,909
Prepaid expenses and other current assets	5,091	3,023
Total current assets	75,504	35,934
Property and equipment, net	11,318	11,560
Restricted cash	1,143	1,143
Intangible assets, net	82	97
Other assets	86	30
TOTAL ASSETS	88,133	48,764
Current liabilities:
Accounts payable	6,799	4,980
Accrued liabilities	9,040	6,334
Customer deposits	20,920	19,400
Deferred revenue, current portion	10,873	6,515
Total current liabilities	47,632	37,229
Deferred revenue, net of current portion	3,215	3,918
Long-term debt	44,458	44,290
Warrant liabilities	12,835	2,723
Other long-term liabilities	6,568	4,257
TOTAL LIABILITIES	114,708	92,417
Commitments and contingencies (Note 6)
Stockholders’ deficit:
Preferred stock, par value of $0.01 per share; 10,000,000 shares authorized at September 30, 2017 and December 31, 2016; no shares issued and outstanding at September 30, 2017 and December 31, 2016	0	0
Common stock, par value of $0.01 per share; 300,000,000 shares authorized at September 30, 2017 and December 31, 2016; 59,071,653 and 43,581,184 shares issued and outstanding at September 30, 2017 and December 31, 2016	581	426
Additional paid-in capital	268,051	203,598
Accumulated deficit	(295,207)	(247,677)
TOTAL STOCKHOLDERS’ DEFICIT	(26,575)	(43,653)
TOTAL LIABILITIES AND STOCKHOLDERS’ DEFICIT	$ 88,133	$ 48,764