Condensed Consolidated Balance Sheets (Statement) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 149,900	$ 156,720
Accounts receivable	21,978	11,769
Inventory, net of allowance of $2,768 and $2,286, respectively	37,875	46,641
Deposits on purchased inventory	4,726	2,084
Deferred cost of revenue	1,338	1,954
Prepaid expenses and other current assets	4,334	5,257
Total current assets	220,151	224,425
Property and equipment, net	20,337	24,062
Restricted cash	1,460	1,460
Intangible assets, net	45	50
Right-of-use assets	10,231	10,129
Other assets	7,869	1,426
TOTAL ASSETS	260,093	261,552
Current liabilities:
Accounts payable	8,125	9,984
Accrued liabilities	19,323	19,281
Customer deposits	16,808	15,463
Operating lease liability, current	2,441	2,089
Deferred revenue, current	12,468	10,094
Total current liabilities	59,165	56,911
Deferred revenue, net of current portion	4,670	2,572
Long-term debt	57,177	56,940
Warrant liabilities	10,088	4,864
Operating lease liability, noncurrent	8,729	9,043
Other long-term liabilities	2,516	956
TOTAL LIABILITIES	142,345	131,286
Commitments and contingencies
Stockholders’ equity:
Preferred stock, par value of $0.01 per share; 10,000,000 shares authorized at September 30, 2021 and December 31, 2020; no shares issued and outstanding at September 30, 2021 and December 31, 2020, respectively	0	0
Common stock, par value of $0.01 per share; 300,000,000 shares authorized at September 30, 2021 and December 31, 2020; 164,382,033 and 148,615,351 shares issued and outstanding at September 30, 2021 and December 31, 2020, respectively	1,634	1,476
Additional paid-in capital	826,178	755,874
Accumulated deficit	(710,064)	(627,084)
TOTAL STOCKHOLDERS’ EQUITY	117,748	130,266
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 260,093	$ 261,552