Condensed Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income	Total
Beginning balance (in shares) at Dec. 31, 2020	34,249,649
Beginning balance at Dec. 31, 2020	$ 34	$ 346,318	$ (238,891)	$ 39	$ 107,500
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options		848			848
Exercise of stock options (in shares)	163,151
Issuance of common stock upon release of restricted stock units (in shares)	25,490
Stock-based compensation		3,533			3,533
Net loss			(10,694)		(10,694)
Unrealized loss on investments, net				(33)	(33)
Ending balance (in shares) at Mar. 31, 2021	34,438,290
Ending balance at Mar. 31, 2021	$ 34	350,699	(249,585)	6	101,154
Beginning balance (in shares) at Dec. 31, 2020	34,249,649
Beginning balance at Dec. 31, 2020	$ 34	346,318	(238,891)	39	107,500
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss					(21,233)
Ending balance (in shares) at Jun. 30, 2021	34,623,409
Ending balance at Jun. 30, 2021	$ 35	356,224	(260,124)	3	96,138
Beginning balance (in shares) at Mar. 31, 2021	34,438,290
Beginning balance at Mar. 31, 2021	$ 34	350,699	(249,585)	6	101,154
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options	$ 1	1,030			1,031
Exercise of stock options (in shares)	155,443
Issuance of common stock upon release of restricted stock units (in shares)	2,792
Issuance of common stock under employee stock purchase plan		1,086			1,086
Issuance of common stock under employee stock purchase plan (in shares)	26,884
Stock-based compensation		3,409			3,409
Net loss			(10,539)		(10,539)
Unrealized loss on investments, net				(3)	(3)
Ending balance (in shares) at Jun. 30, 2021	34,623,409
Ending balance at Jun. 30, 2021	$ 35	356,224	(260,124)	3	96,138
Beginning balance (in shares) at Dec. 31, 2021	34,980,896
Beginning balance at Dec. 31, 2021	$ 35	367,907	(288,702)		79,240
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options		168			168
Exercise of stock options (in shares)	35,453
Issuance of common stock upon release of restricted stock units (in shares)	57,253
Stock-based compensation		4,978			4,978
Net loss			(16,679)		(16,679)
Ending balance (in shares) at Mar. 31, 2022	35,073,602
Ending balance at Mar. 31, 2022	$ 35	373,053	(305,381)		67,707
Beginning balance (in shares) at Dec. 31, 2021	34,980,896
Beginning balance at Dec. 31, 2021	$ 35	367,907	(288,702)		$ 79,240
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)					91,394
Net loss					$ (32,077)
Ending balance (in shares) at Jun. 30, 2022	35,193,169
Ending balance at Jun. 30, 2022	$ 35	380,775	(320,779)	(2)	60,029
Beginning balance (in shares) at Mar. 31, 2022	35,073,602
Beginning balance at Mar. 31, 2022	$ 35	373,053	(305,381)		67,707
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options		322			322
Exercise of stock options (in shares)	55,941
Issuance of common stock upon release of restricted stock units (in shares)	13,075
Issuance of common stock under employee stock purchase plan		1,239			1,239
Issuance of common stock under employee stock purchase plan (in shares)	50,551
Stock-based compensation		6,161			6,161
Net loss			(15,398)		(15,398)
Unrealized loss on investments, net				(2)	(2)
Ending balance (in shares) at Jun. 30, 2022	35,193,169
Ending balance at Jun. 30, 2022	$ 35	$ 380,775	$ (320,779)	$ (2)	$ 60,029