Unaudited Condensed Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Total	Class B Common Stock	Common Stock	Additional Paid-In Capital	Accumulate Deficit
Beginning balance at Dec. 31, 2021	$ 210,821		$ 4	$ 397,136	$ (186,319)
Beginning balance, share at Dec. 31, 2021		1,492,059	35,799,233
Stock-based compensation expense	11,062			11,062
Issuance of common stock under equity incentive plans, share			276,502
Stock Issued During Period Shares Conversion Of Class B Common Stock		(280,100)	280,100
Issuance of common stock for Employee Stock Purchase Plan	19			19
Issuance of common stock for Employee Stock Purchase Plan, shares			9,482
Taxes related to net share settlement of equity awards	(329)			(329)
Net loss	(78,939)				(78,939)
Ending balance at Sep. 30, 2022	142,634		$ 4	407,888	(265,258)
Ending balance, share at Sep. 30, 2022		1,211,959	36,365,317
Beginning balance at Jun. 30, 2022	164,952		$ 4	404,427	(239,479)
Beginning balance, share at Jun. 30, 2022		1,492,059	35,993,458
Stock-based compensation expense	3,588			3,588
Issuance of common stock under equity incentive plans, share			91,759
Stock Issued During Period Shares Conversion Of Class B Common Stock		(280,100)	280,100
Taxes related to net share settlement of equity awards	(127)			(127)
Net loss	(25,779)				(25,779)
Ending balance at Sep. 30, 2022	142,634		$ 4	407,888	(265,258)
Ending balance, share at Sep. 30, 2022		1,211,959	36,365,317
Beginning balance at Dec. 31, 2022	180,339		$ 5	473,135	(292,801)
Beginning balance, share at Dec. 31, 2022		1,211,959	46,336,166
Stock-based compensation expense	10,806			10,806
Issuance of common stock under equity incentive plans, share			268,009
Issuance of common stock for Employee Stock Purchase Plan	187			187
Issuance of common stock for Employee Stock Purchase Plan, shares			56,793
Issuance of common stock for director compensation, shares			34,468
Issuance of common stock for director compensation	81			81
Taxes related to net share settlement of equity awards	(173)			(173)
Conversion of Class B common stock, shares		(1,211,959)	1,211,959
Net loss	(96,537)				(96,537)
Ending balance at Sep. 30, 2023	94,703		$ 5	484,036	(389,338)
Ending balance, share at Sep. 30, 2023		0	47,907,395
Beginning balance at Jun. 30, 2023	124,516		$ 5	480,524	(356,013)
Beginning balance, share at Jun. 30, 2023			47,803,306
Stock-based compensation expense	3,517			3,517
Issuance of common stock under equity incentive plans, share			88,428
Issuance of common stock for Employee Stock Purchase Plan	14			14
Issuance of common stock for Employee Stock Purchase Plan, shares			0
Issuance of common stock for director compensation, shares			15,661
Issuance of common stock for director compensation	27			27
Taxes related to net share settlement of equity awards	(46)			(46)
Net loss	(33,325)				(33,325)
Ending balance at Sep. 30, 2023	$ 94,703		$ 5	$ 484,036	$ (389,338)
Ending balance, share at Sep. 30, 2023		0	47,907,395