Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 143,940	$ 87,880
Restricted cash	449
Prepaid expenses and other current assets	3,479	8,537
Assets held for sale	2,000
Total current assets	149,868	96,417
Restricted cash	2,151	2,637
Property, plant and equipment, net	10,826	14,963
Operating lease right-of-use assets	9,582	10,943
Other non-current assets	304	1,316
Total assets	172,731	126,276
Current liabilities
Accounts payable	6,366	10,946
Accrued expenses and other current liabilities	12,284	18,287
Deferred revenue	18,106	33,557
Total current liabilities	36,756	62,790
Term loan, net	40,508	37,967
Operating lease liability, net of current portion	18,953	20,440
Other non-current liabilities	1,577	4,130
Total liabilities	97,794	125,327
Commitments and contingencies - Note 13
Stockholders' equity
Preferred stock, $0.00001 par value per share; 10,000,000 shares authorized and no shares issued and outstanding as of December 31, 2023 and December 31, 2022
Common stock, $0.00001 par value per share; 400,000,000 shares authorized and 186,960,193 issued and outstanding as of December 31, 2023 and 200,000,000 shares authorized and 63,207,507 issued and outstanding as of December 31, 2022.	2	1
Additional paid-in capital	587,942	402,389
Accumulated deficit	(513,007)	(401,441)
Total stockholders’ equity	74,937	949
Total liabilities and stockholders' equity	$ 172,731	$ 126,276