CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Assets, Current [Abstract]
Cash and cash equivalents	$ 65,010	$ 69,696
Accounts receivable	1,130	686
Inventories	503	500
Deferred costs	2,578	1,897
Prepaid expenses and other current assets	1,479	2,394
Total current assets	70,700	75,173
Non-current assets:
Property, plant and equipment, net	6,903	4,236
Operating lease right-of-use assets, net	7,744	2,751
Deferred costs	588	367
Other assets	702	644
Total assets	86,637	83,171
Current liabilities:
Accounts payable	597	1,028
Accrued and other current liabilities	7,141	2,708
Deferred revenue	3,198	2,660
Operating lease liabilities	1,070	521
Total current liabilities	12,006	6,917
Non-current liabilities:
Deferred revenue	943	720
Operating lease liabilities	6,998	2,501
Total liabilities	19,947	10,138
Commitments and contingencies (Note 10)
Stockholders’ equity:
Preferred stock; $0.0001 par value; 50,000,000 shares authorized; no shares issued and outstanding.	0	0
Common stock; $0.0001 par value; 950,000,000 shares authorized; 85,993,560 and 84,610,114 shares issued and outstanding at June 30, 2023 and December 31, 2022, respectively	9	8
Additional paid-in capital	178,118	165,912
Accumulated deficit	(111,437)	(92,887)
Total stockholders’ equity	66,690	73,033
Total liabilities and stockholders’ equity	$ 86,637	$ 83,171