CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Assets
Cash and cash equivalents	$ 34,677	$ 67,420
Marketable securities	226,533	256,392
Accounts receivable	868	2,887
Inventories	2,787	2,951
Other current assets	5,827	5,473
Total current assets	270,692	335,123
Operating lease right-of-use assets	5,904	7,402
Property, plant and equipment, net	11,188	9,720
Intangible assets, net	3,075	3,525
Other noncurrent assets	867	862
Total assets	291,726	356,632
Liabilities and stockholders' equity
Accounts payable	6,000	5,182
Accrued liabilities	2,325	9,063
Accrued employee costs	3,516	4,721
Lease liability, current portion	2,463	2,667
Other current liabilities	240	194
Total current liabilities	14,544	21,827
Lease liability, noncurrent portion	3,534	4,789
Warrant liability	62	90
Total liabilities	18,140	26,706
Commitments and contingencies (Note 12)
Convertible preferred stock $0.0001 par value; 10,000 shares authorized; no,shares issued and outstanding	0	0
Stockholders' Deficit
Common stock $0.0001 par value; 422,000 shares authorized; 220,050 and 218,748 shares issued and outstanding at March 31, 2023 and December 31, 2022, respectively	22	22
Additional paid-in capital	656,856	643,756
Accumulated other comprehensive loss	(1,896)	(3,585)
Accumulated deficit	(381,396)	(310,267)
Total stockholders' equity	273,586	329,926
Total liabilities and stockholders' equity	$ 291,726	$ 356,632