STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock Voting Common Stock	Common Stock Non-voting Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning balance at Dec. 31, 2020	$ 212,183	$ 3	$ 1	$ 319,605		$ (107,426)
Beginning balance (shares) at Dec. 31, 2020		32,595,301	11,110,371
Issuance of common stock upon exercise of stock options	$ 3,504			3,504
Issuance of common stock upon exercise of stock options, (shares)	995,950	995,950
Sale of stock, net of offering costs	$ 161,412	$ 1		161,411
Sale of stock, net of offering costs, (shares)		2,583,334	291,666
Issuance of common stock under ESPP	272			272
Issuance of common stock under ESPP, (shares)		25,714
Unrealized gain (loss) on marketable securities, net of tax	(711)				$ (711)
Stock-based compensation expense, including issuance of RSAs	20,931			20,931
Net loss	(111,694)					(111,694)
Ending balance at Dec. 31, 2021	$ 285,897	$ 4	$ 1	505,723	(711)	(219,120)
Ending balance (shares) at Dec. 31, 2021		36,200,299	11,402,037
Issuance of common stock upon exercise of stock options, (shares)	217,905
Issuance of common stock upon exercise of stock options & vesting of RSUs	$ 389			389
Issuance of common stock upon exercise of stock options & vesting of RSUs, (shares)		222,905
Issuance of common stock under ESPP	426			426
Issuance of common stock under ESPP, (shares)		97,206
Unrealized gain (loss) on marketable securities, net of tax	(981)				(981)
Stock-based compensation expense, including issuance of RSAs	25,144			25,144
Stock-based compensation expense, including issuance of RSAs (shares)		(23,416)
Net loss	(115,438)					(115,438)
Ending balance at Dec. 31, 2022	$ 195,437	$ 4	$ 1	$ 531,682	$ (1,692)	$ (334,558)
Ending balance (shares) at Dec. 31, 2022		36,496,994	11,402,037