STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Gain (Loss)	Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2020		41,767,431
Beginning balance at Dec. 31, 2020	$ 309,861	$ 5	$ 382,012	$ (63)	$ (72,093)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	1,180		1,180
Unrealized gain (loss) on investments	(597)			(597)
Exercise of stock options (in shares)		13,543
Exercise of stock options	31		31
Net loss	(11,813)				(11,813)
Vesting of common stock previously subject to vesting requirements (in shares)		5,037
Ending balance (in shares) at Mar. 31, 2021		41,786,011
Ending balance at Mar. 31, 2021	298,662	$ 5	383,223	(660)	(83,906)
Beginning balance (in shares) at Dec. 31, 2020		41,767,431
Beginning balance at Dec. 31, 2020	309,861	$ 5	382,012	(63)	(72,093)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Unrealized gain (loss) on investments	(1,764)
Net loss	(52,821)
Ending balance (in shares) at Sep. 30, 2021		42,241,981
Ending balance at Sep. 30, 2021	261,166	$ 5	387,902	(1,827)	(124,914)
Beginning balance (in shares) at Dec. 31, 2020		41,767,431
Beginning balance at Dec. 31, 2020	309,861	$ 5	382,012	(63)	(72,093)
Ending balance (in shares) at Dec. 31, 2021		42,338,898
Ending balance at Dec. 31, 2021	271,786	$ 5	389,408	(560)	(117,067)
Beginning balance (in shares) at Mar. 31, 2021		41,786,011
Beginning balance at Mar. 31, 2021	298,662	$ 5	383,223	(660)	(83,906)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	1,727		1,727
Unrealized gain (loss) on investments	(960)			(960)
Exercise of stock options (in shares)		324,342
Exercise of stock options	1,256		1,256
Net loss	(23,598)				(23,598)
Vesting of common stock previously subject to vesting requirements (in shares)		5,037
Ending balance (in shares) at Jun. 30, 2021		42,115,390
Ending balance at Jun. 30, 2021	277,087	$ 5	386,206	(1,620)	(107,504)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options and purchases pursuant to employee stock purchase plan (in shares)		124,913
Exercise of stock options and purchases pursuant to employee stock purchase plan	352		352
Stock-based compensation expense	1,344		1,344
Unrealized gain (loss) on investments	(207)			(207)
Net loss	(17,410)				(17,410)
Vesting of common stock previously subject to vesting requirements (in shares)		1,678
Ending balance (in shares) at Sep. 30, 2021		42,241,981
Ending balance at Sep. 30, 2021	261,166	$ 5	387,902	(1,827)	(124,914)
Beginning balance (in shares) at Dec. 31, 2021		42,338,898
Beginning balance at Dec. 31, 2021	271,786	$ 5	389,408	(560)	(117,067)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options and purchases pursuant to employee stock purchase plan (in shares)		39,616
Exercise of stock options and purchases pursuant to employee stock purchase plan	134		134
Stock-based compensation expense	1,513		1,513
Unrealized gain (loss) on investments	33			33
Net loss	(24,528)				(24,528)
Ending balance (in shares) at Mar. 31, 2022		42,378,514
Ending balance at Mar. 31, 2022	248,938	$ 5	391,055	(527)	(141,595)
Beginning balance (in shares) at Dec. 31, 2021		42,338,898
Beginning balance at Dec. 31, 2021	271,786	$ 5	389,408	(560)	(117,067)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Unrealized gain (loss) on investments	$ (774)
Exercise of stock options (in shares)	38,600
Net loss	$ (76,534)
Ending balance (in shares) at Sep. 30, 2022		42,390,586
Ending balance at Sep. 30, 2022	199,418	$ 5	394,348	(1,334)	(193,601)
Beginning balance (in shares) at Mar. 31, 2022		42,378,514
Beginning balance at Mar. 31, 2022	248,938	$ 5	391,055	(527)	(141,595)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	1,533		1,533
Unrealized gain (loss) on investments	(581)			(581)
Exercise of stock options (in shares)		3,499
Exercise of stock options	10		10
Net loss	(27,371)				(27,371)
Ending balance (in shares) at Jun. 30, 2022		42,382,013
Ending balance at Jun. 30, 2022	222,529	$ 5	392,598	(1,108)	(168,966)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options and purchases pursuant to employee stock purchase plan (in shares)		8,573
Exercise of stock options and purchases pursuant to employee stock purchase plan	27		27
Stock-based compensation expense	1,723		1,723
Unrealized gain (loss) on investments	(226)			(226)
Net loss	(24,635)				(24,635)
Ending balance (in shares) at Sep. 30, 2022		42,390,586
Ending balance at Sep. 30, 2022	$ 199,418	$ 5	$ 394,348	$ (1,334)	$ (193,601)