Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
CURRENT ASSETS:
Cash and cash equivalents	$ 54,028	$ 82,160
Accounts receivable, net	276	234
Related party receivables	10,000
Inventories, net	28,856	24,989
Prepaid expenses and other current assets	15,519	12,249
Total current assets	108,679	119,632
Property and equipment, net	100,397	108,355
Other noncurrent assets	6,995	3,719
TOTAL ASSETS	216,071	231,706
CURRENT LIABILITIES:
Accounts payable	40,653	27,962
Current portion of related party payables	6,000
Current portion of long-term debt		3,500
Accrued expenses and other current liabilities	29,507	31,951
Deferred revenue	13,308	7,958
Warrant obligation		8,001
Total current liabilities	89,468	79,372
Long-term debt	27,217	25,886
Facility financing obligation	35,832	35,886
Related party payables	3,000
Other noncurrent liabilities	8,156	10,509
TOTAL LIABILITIES	163,673	151,653
Commitments and contingencies (Note 10)
STOCKHOLDERS' EQUITY:
Additional paid-in capital	780,481	746,564
Accumulated deficit	(728,086)	(666,514)
TOTAL STOCKHOLDERS' EQUITY	52,398	80,053
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	216,071	231,706
Class A
STOCKHOLDERS' EQUITY:
Common Stock	$ 3	$ 3