Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 164,278	$ 87,880
Prepaid expenses and other current assets	5,529	8,537
Assets held for sale	2,000
Total current assets	171,807	96,417
Restricted cash	2,637	2,637
Property, plant and equipment, net	11,169	14,963
Operating lease right-of-use assets	9,852	10,943
Other non-current assets	304	1,316
Total assets	195,769	126,276
Current liabilities
Accounts payable	7,520	10,946
Accrued expenses and other current liabilities	13,638	18,287
Deferred revenue	18,759	33,557
Warrant liability	140,534
Total current liabilities	180,451	62,790
Deferred revenue, net of current portion	2,951
Term loan, net	38,548	37,967
Operating lease liability, net of current portion	19,101	20,440
Other non-current liabilities	3,832	4,130
Total liabilities	244,883	125,327
Commitments and contingencies - Note 13
Stockholders' (deficit) equity
Preferred stock, $0.00001 par value per share; 10,000,000 shares authorized and no shares issued and outstanding as of September 30, 2023 and December 31, 2022
Common stock, $0.00001 par value per share; 200,000,000 shares authorized and 186,960,193 and 63,207,507 issued and outstanding as of September 30, 2023 and December 31, 2022, respectively	2	1
Additional paid-in capital	511,632	402,389
Accumulated deficit	(560,748)	(401,441)
Total stockholders' (deficit) equity	(49,114)	949
Total liabilities and stockholders' (deficit) equity	$ 195,769	$ 126,276