CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Assets
Cash and cash equivalents	$ 83,048	$ 66,810
Marketable securities	295,876	378,200
Accounts receivable	353	2,341
Inventories	1,854	2,063
Other current assets	12,300	9,070
Total current assets	393,431	458,484
Operating lease right-of-use assets	8,862	10,284
Property, plant and equipment, net	8,520	5,136
Intangible assets, net	3,975	4,425
Other noncurrent assets	860	859
Total assets	415,648	479,188
Liabilities, convertible preferred stock and stockholders' equity
Accounts payable	4,501	4,386
Accrued liabilities	2,677	4,110
Accrued employee costs	2,166	2,196
Lease liability, current portion	2,925	2,872
Other current liabilities	220	733
Total current liabilities	12,489	14,297
Lease liability, noncurrent portion	5,998	7,455
Warrant liability	273	1,060
Total liabilities	18,760	22,812
Commitments and contingencies (Note 14)
Convertible preferred stock $0.0001 par value; 10,000 shares authorized; no shares issued and outstanding
Stockholders' Deficit
Common stock $0.0001 par value; 422,000 shares authorized; 217,212 and 214,997 shares issued and outstanding at June 30, 2022 and December 31, 2021, respectively	22	21
Additional paid-in capital	631,885	619,841
Accumulated other comprehensive loss	(3,929)	(524)
Accumulated deficit	(231,090)	(162,962)
Total stockholders' equity	396,888	456,376
Total liabilities, convertible preferred stock and stockholders' equity	$ 415,648	$ 479,188