CONDENSED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS’ EQUITY (DEFICIT) (Unaudited) - USD ($) $ in Thousands	Total	Series A Redeemable Convertible Preferred Stock	Series B Redeemable Convertible Preferred Stock	Series C Redeemable Convertible Preferred Stock	Common Stock	Additional Paid-In Capital	Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2020		8,350,743	46,176,715	28,998,607
Beginning balance at Dec. 31, 2020		$ 7,519	$ 66,186	$ 102,618
Ending balance (in shares) at Mar. 31, 2021		8,350,743	46,176,715	28,998,607
Ending balance at Mar. 31, 2021		$ 7,519	$ 66,186	$ 102,618
Beginning balance (in shares) at Dec. 31, 2020					27,995,780
Beginning balance at Dec. 31, 2020	$ (101,400)				$ 0	$ 9,036	$ (110,436)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of common stock options (in shares)					622,749
Exercise of common stock options	32					32
Vesting of early exercised stock options (in shares)					0
Vesting of early exercised stock options	46					46
Stock-based compensation, including employee stock purchase plan activity	3,021					3,021
Net income	13,031						13,031
Ending balance (in shares) at Mar. 31, 2021					28,618,529
Ending balance at Mar. 31, 2021	(85,270)				$ 0	12,135	(97,405)
Beginning balance (in shares) at Dec. 31, 2021					146,402,991
Beginning balance at Dec. 31, 2021	$ 706,750				$ 1	730,767	(24,018)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of common stock options (in shares)	294,856				294,231
Exercise of common stock options	$ 270					270
Tax withholding on exercise of stock options and restricted stock units	(720)					(720)
Vesting of restricted stock units (in shares)					261,074
Stock-based compensation, including employee stock purchase plan activity	16,035					16,035
Net income	2,803						2,803
Ending balance (in shares) at Mar. 31, 2022					146,958,296
Ending balance at Mar. 31, 2022	$ 725,138				$ 1	$ 746,352	$ (21,215)