Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2020		64,486,246
Beginning balance at Dec. 31, 2020	$ 244,781	$ 3	$ 436,662	$ (191,884)	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)		2,767,866
Exercise of stock options	9,674	$ 1	9,673
Vesting of restricted stock units (in shares)		39,119
Employee stock purchase plan (in shares)		163,008
Employee stock purchase plan	3,644		3,644
Stock-based compensation	16,078		16,078
Net loss	(53,992)			(53,992)
Ending balance (in shares) at Sep. 30, 2021		67,456,239
Ending balance at Sep. 30, 2021	220,185	$ 4	466,057	(245,876)	0
Beginning balance (in shares) at Jun. 30, 2021		67,043,537
Beginning balance at Jun. 30, 2021	231,839	$ 4	457,308	(225,473)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)		345,126
Exercise of stock options	1,327		1,327
Vesting of restricted stock units (in shares)		19,928
Employee stock purchase plan (in shares)		47,648
Employee stock purchase plan	1,487		1,487
Stock-based compensation	5,935		5,935
Net loss	(20,403)			(20,403)
Ending balance (in shares) at Sep. 30, 2021		67,456,239
Ending balance at Sep. 30, 2021	220,185	$ 4	466,057	(245,876)	0
Beginning balance (in shares) at Dec. 31, 2021		67,595,535
Beginning balance at Dec. 31, 2021	208,216	$ 4	471,820	(263,608)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)		296,169
Exercise of stock options	833		833
Vesting of restricted stock units (in shares)		532,529
Employee stock purchase plan (in shares)		150,724
Employee stock purchase plan	719		719
Stock-based compensation	17,172		17,172
Other comprehensive gain (loss)	(18)				(18)
Net loss	(68,739)			(68,739)
Ending balance (in shares) at Sep. 30, 2022		68,574,957
Ending balance at Sep. 30, 2022	158,183	$ 4	490,544	(332,347)	(18)
Beginning balance (in shares) at Jun. 30, 2022		68,273,932
Beginning balance at Jun. 30, 2022	174,416	$ 4	485,212	(310,781)	(19)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)		33,502
Exercise of stock options	67		67
Vesting of restricted stock units (in shares)		232,145
Employee stock purchase plan (in shares)		35,378
Employee stock purchase plan	109		109
Stock-based compensation	5,156		5,156
Other comprehensive gain (loss)	1				1
Net loss	(21,566)			(21,566)
Ending balance (in shares) at Sep. 30, 2022		68,574,957
Ending balance at Sep. 30, 2022	$ 158,183	$ 4	$ 490,544	$ (332,347)	$ (18)