Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 172,743	$ 143,940
Restricted cash	449	449
Prepaid expenses and other current assets	3,278	3,479
Assets held for sale	2,000	2,000
Total current assets	178,470	149,868
Restricted cash	2,151	2,151
Property, plant and equipment, net	10,513	10,826
Operating lease right-of-use assets	8,971	9,582
Other non-current assets	288	304
Total assets	200,393	172,731
Current liabilities
Accounts payable	8,718	6,366
Accrued expenses and other current liabilities	11,875	12,284
Deferred revenue	13,583	18,106
Total current liabilities	34,176	36,756
Term loan, net	37,835	40,508
Operating lease liability, net of current portion	18,134	18,953
Other non-current liabilities	1,380	1,577
Total liabilities	91,525	97,794
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 June 30, 2024 and December 31, 2023
Common stock, $0.00001 par value per share; 400,000,000 shares authorized and 201,381,450 and 186,960,193 issued and outstanding as of June 30, 2024 and December 31, 2023, respectively	2	2
Additional paid-in capital	664,457	587,942
Accumulated other comprehensive income	2,405
Accumulated deficit	(557,996)	(513,007)
Total stockholders' equity	108,868	74,937
Total liabilities and stockholders' equity	$ 200,393	$ 172,731