Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 157,688		$ 143,940
Restricted cash	449		449
Prepaid expenses and other current assets	3,418		3,479
Assets held for sale			2,000
Total current assets	161,555		149,868
Restricted cash	2,151		2,151
Property, plant and equipment, net	7,613		10,826
Operating lease right-of-use assets	8,678		9,582
Other non-current assets	220		304
Total assets	180,217		172,731
Current liabilities
Accounts payable	4,932		6,366
Accrued expenses and other current liabilities	12,608		12,284
Deferred revenue	11,795		18,106
Total current liabilities	29,335		36,756
Term loan, net	42,971		40,508
Operating lease liability, net of current portion	17,751		18,953
Other non-current liabilities	1,363		1,577
Total liabilities	91,420		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 September 30, 2024 and December 31, 2023
Common stock, $0.00001 par value per share; 400,000,000 shares authorized and 204,943,306 and 186,960,193 issued and outstanding as of September 30, 2024 and December 31, 2023, respectively	2		2
Additional paid-in capital	674,643		587,942
Accumulated other comprehensive loss	(2,328)
Accumulated deficit	(583,520)		(513,007)
Total stockholders' equity	88,797	$ 108,868	74,937
Total liabilities and stockholders' equity	$ 180,217		$ 172,731