Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 226,783	$ 167,432
Accounts receivable	16,817	36,867
Inventory	55,031	49,462
Deposits on purchased inventory	6,457	8,142
Deferred cost of revenue	3,466	9,736
Prepaid expenses and other current assets	3,310	6,045
Total current assets	311,864	277,684
Property and equipment, net	23,399	13,958
Restricted cash	1,404	1,933
Intangible assets, net	55	0
Right-of-use assets	11,720	0
Other assets	1,577	1,395
TOTAL ASSETS	350,019	294,970
Current liabilities:
Accounts payable	13,739	10,207
Accrued liabilities	21,390	9,983
Customer deposits	9,662	19,968
Operating lease liability, current	2,264	0
Current portion of long-term debt	1,556	0
Deferred revenue, current portion	10,457	13,731
Total current liabilities	59,068	53,889
Deferred revenue, net of current portion	3,553	5,744
Long-term debt	53,995	55,364
Warrant liability	5,373	11,844
Operating lease liability, noncurrent	10,479	0
Other long-term liabilities	1,377	820
TOTAL LIABILITIES	133,845	127,661
Commitments and contingencies (Note 6)	0	0
Stockholders’ equity:
Convertible preferred stock, par value $0.01 per share; 10,000,000 shares authorized at December 31, 2019 and 2018; no shares issued and outstanding at December 31, 2019 and 2018	0	0
Common stock, par value of $0.01 per share; 300,000,000 shares authorized at December 31, 2019 and 2018; 147,191,695 and 96,332,023 shares issued and outstanding at December 31, 2019 and 2018	1,462	952
Additional paid-in capital	733,888	565,334
Accumulated deficit	(519,176)	(398,977)
TOTAL STOCKHOLDERS’ EQUITY	216,174	167,309
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 350,019	$ 294,970