CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Assets
Cash and cash equivalents	$ 23,622	$ 38,547
Marketable securities	136,560	182,481
Accounts receivable	844	628
Inventories	2,999	2,374
Other current assets	8,351	5,195
Total current assets	172,376	229,225
Operating lease right-of-use assets	5,586	7,289
Property, plant and equipment, net	12,155	12,114
Intangible assets, net	2,175	2,625
Other noncurrent assets	5,815	6,132
Total assets	198,107	257,385
Liabilities and stockholders' equity
Accounts payable	3,824	3,602
Accrued liabilities	2,936	2,648
Accrued employee costs	3,044	6,043
Lease liability, current portion	3,783	3,587
Other current liabilities	19,046	2,524
Total current liabilities	32,633	18,404
Lease liability, noncurrent portion	1,822	3,767
Warrant liability	3,692	6,772
Total liabilities	38,147	28,943
Commitments and contingencies (Note 15)
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; 53,176 and 52,389 shares issued and outstanding at June 30, 2024 and December 31, 2023, respectively	5	5
Additional paid-in capital	698,510	688,124
Accumulated other comprehensive loss	(236)	(87)
Accumulated deficit	(538,319)	(459,600)
Total stockholders' equity	159,960	228,442
Total liabilities and stockholders' equity	$ 198,107	$ 257,385