Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 79,674	$ 53,654
Restricted cash, current	0	50
Prepaid expenses and other current assets, current	2,863	557
Total current assets	82,537	54,261
Restricted cash, noncurrent	293	293
Prepaid expenses and other current assets, noncurrent	51	0
Non-marketable equity securities	867	0
Total assets	83,748	54,554
Current liabilities:
Accounts payable	1,385	909
Restructuring liability, current	377	962
Accrued expenses and other current liabilities	5,928	535
Total current liabilities	7,690	2,406
Long-term Debt	4,923	0
Restructuring liability, noncurrent	1,257	1,634
Accrued and other noncurrent liabilities	286	286
Total liabilities	14,156	4,326
Commitments and contingencies (Note 14)
Redeemable convertible preferred stock, $0.001 par value; 0 and 182,772,372 shares authorized, issued and outstanding as of December 31, 2021 and December 31, 2020, respectively	0	139,576
Stockholders’ equity (deficit)
Preferred stock, $0.001 par value; 10,000,000 and 0 shares authorized as of December 31, 2021 and 2020, respectively; no shares issued and outstanding as of December 31, 2021 and December 31, 2020	0	0
Additional paid-in capital	193,627	2,099
Accumulated deficit	(124,056)	(91,447)
Total stockholders’ equity (deficit)	69,592	(89,348)
Total liabilities, redeemable convertible preferred stock, and stockholders’ equity (deficit)	83,748	54,554
Common Class A [Member]
Stockholders’ equity (deficit)
Common Stock	21	0
Common Class B Non Voting [Member]
Stockholders’ equity (deficit)
Common Stock	$ 0	$ 0