CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 90,115	$ 241,806
Marketable securities	360,347	230,357
Prepaid expenses and other current assets	5,831	5,828
Total current assets	456,293	477,991
Other assets	4,696	4,468
Total assets	460,989	482,459
Current liabilities:
Accounts payable	6,433	7,195
Accrued expenses	10,588	12,286
Total current liabilities	17,021	19,481
Total liabilities	17,021	19,481
Commitments and contingencies (Note 7)
Stockholders' equity:
Preferred stock, $0.0001 par value; 10,000,000 shares authorized; no shares issued or outstanding	0	0
Additional paid-in capital	629,533	623,543
Accumulated other comprehensive loss	(302)	(494)
Accumulated deficit	(185,269)	(160,077)
Total stockholders' equity	443,968	462,978
Total liabilities and stockholders' equity	460,989	482,459
Common Class A [Member]
Stockholders' equity:
Common stock	5	5
Common Class B [Member]
Stockholders' equity:
Common stock	$ 1	$ 1

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).