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, 2020	$ 209,974		$ 3	$ 300,888	$ (90,917)
Beginning balance, share at Dec. 31, 2020		1,492,059	32,171,560
Stock-based compensation expense	16,941			16,941
Issuance of common stock under equity incentive plans, share			138,461
Issuance of common stock for Employee Stock Purchase Plan	190			190
Issuance of common stock for Employee Stock Purchase Plan, shares			5,280
Net loss	(49,082)				(49,082)
Ending balance at Jun. 30, 2021	178,023		$ 3	318,019	(139,999)
Ending balance, share at Jun. 30, 2021		1,492,059	32,315,301
Beginning balance at Mar. 31, 2021	195,916		$ 3	305,531	(109,618)
Beginning balance, share at Mar. 31, 2021		1,492,059	32,171,560
Stock-based compensation expense	12,298			12,298
Issuance of common stock under equity incentive plans, share			138,461
Issuance of common stock for Employee Stock Purchase Plan	190			190
Issuance of common stock for Employee Stock Purchase Plan, shares			5,280
Net loss	(30,381)				(30,381)
Ending balance at Jun. 30, 2021	178,023		$ 3	318,019	(139,999)
Ending balance, share at Jun. 30, 2021		1,492,059	32,315,301
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	7,474			7,474
Issuance of common stock under equity incentive plans, share			184,743
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	(202)			(202)
Net loss	(53,160)				(53,160)
Ending balance at Jun. 30, 2022	164,952		$ 4	404,427	(239,479)
Ending balance, share at Jun. 30, 2022		1,492,059	35,993,458
Beginning balance at Mar. 31, 2022	190,053		$ 4	400,622	(210,573)
Beginning balance, share at Mar. 31, 2022		1,492,059	35,891,284
Stock-based compensation expense	3,842			3,842
Issuance of common stock under equity incentive plans, share			92,692
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	(56)			(56)
Net loss	(28,906)				(28,906)
Ending balance at Jun. 30, 2022	$ 164,952		$ 4	$ 404,427	$ (239,479)
Ending balance, share at Jun. 30, 2022		1,492,059	35,993,458