Condensed consolidated statements of stockholders' equity - USD ($) $ in Thousands	Common Stock Common Class A	Common Stock Common Class B	Additional paid-in capital	Accumulated deficit	Accumulated other comprehensive income (loss)	Series D1 Redeemable Convertible Preferred Stock	Series D2 Redeemable Convertible Preferred Stock	Total
Balance at Dec. 31, 2020								$ 151,826
Balance (shares) at Dec. 31, 2020								133,021,640
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of redeemable convertible preferred stock, net of issuance costs						$ 78,338	$ 1,470
Issuance of redeemable convertible preferred stock, net of issuance costs (in shares)						22,086,725	413,268
Accretion of redeemable convertible preferred stock to redemption value								$ 787
Cumulative redeemable convertible preferred stock dividends								1,411
Balance at Mar. 31, 2021								$ 233,832
Balance (shares) at Mar. 31, 2021								155,521,633
Balance at Dec. 31, 2020	$ 6		$ 114,575	$ (241,588)	$ 1			$ (127,006)
Balance (shares) at Dec. 31, 2020	612,850
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A common stock upon exercise of common stock options	$ 1		66					67
Issuance of Class A common stock upon exercise of common stock options (In shares)	67,418
Accretion of redeemable convertible preferred stock to redemption value			(787)					(787)
Cumulative redeemable convertible preferred stock dividends			(1,411)					(1,411)
Issuance of restricted Class A common stock awards	$ 2		(2)
Issuance of restricted Class A common stock awards (in shares)	248,903
Stock-based compensation expense			191					191
Net loss				(22,101)				(22,101)
Balance at Mar. 31, 2021	$ 9		112,632	(263,689)	1			(151,047)
Balance (shares) at Mar. 31, 2021	929,171
Balance at Dec. 31, 2020								$ 151,826
Balance (shares) at Dec. 31, 2020								133,021,640
Balance at Jun. 30, 2021								$ 235,836
Balance (shares) at Jun. 30, 2021								155,521,633
Balance at Dec. 31, 2020	$ 6		114,575	(241,588)	1			$ (127,006)
Balance (shares) at Dec. 31, 2020	612,850
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss								(33,932)
Balance at Jun. 30, 2021	$ 10		110,984	(275,520)				(164,526)
Balance (shares) at Jun. 30, 2021	966,317
Balance at Mar. 31, 2021								$ 233,832
Balance (shares) at Mar. 31, 2021								155,521,633
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance Costs						$ (64)	$ (1)
Accretion of redeemable convertible preferred stock to redemption value								$ 1,184
Cumulative redeemable convertible preferred stock dividends								885
Balance at Jun. 30, 2021								$ 235,836
Balance (shares) at Jun. 30, 2021								155,521,633
Balance at Mar. 31, 2021	$ 9		112,632	(263,689)	1			$ (151,047)
Balance (shares) at Mar. 31, 2021	929,171
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A common stock upon exercise of common stock options	$ 1		31					32
Issuance of Class A common stock upon exercise of common stock options (In shares)	37,146
Accretion of redeemable convertible preferred stock to redemption value			(1,184)					(1,184)
Cumulative redeemable convertible preferred stock dividends			(885)					(885)
Stock-based compensation expense			390					390
Net loss				(11,831)				(11,831)
Other comprehensive income					(1)			(1)
Balance at Jun. 30, 2021	$ 10		110,984	(275,520)				(164,526)
Balance (shares) at Jun. 30, 2021	966,317
Balance at Dec. 31, 2021	$ 346	$ 69	535,693	(315,112)	(16)			220,980
Balance (shares) at Dec. 31, 2021	34,564,040	6,903,379
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of Class B common stock to Class A common stock	$ 14	$ (14)
Conversion of Class B common stock to Class A common stock (in shares)	1,350,000	(1,350,000)
Restricted stock award liability accretion			154					154
Issuance of Class A common stock upon exercise of common stock options	$ 5		466					471
Issuance of Class A common stock upon exercise of common stock options (In shares)	475,033
Stock-based compensation expense			983					983
Net loss				(14,930)				(14,930)
Other comprehensive income					(588)			(588)
Balance at Mar. 31, 2022	$ 365	$ 55	537,296	(330,042)	(604)			207,070
Balance (shares) at Mar. 31, 2022	36,389,073	5,553,379
Balance at Dec. 31, 2021	$ 346	$ 69	535,693	(315,112)	(16)			$ 220,980
Balance (shares) at Dec. 31, 2021	34,564,040	6,903,379
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A common stock upon exercise of common stock options (In shares)								475,033
Net loss								$ (28,020)
Balance at Jun. 30, 2022	$ 365	$ 55	538,598	(343,132)	(919)			194,967
Balance (shares) at Jun. 30, 2022	36,389,073	5,553,379
Balance at Mar. 31, 2022	$ 365	$ 55	537,296	(330,042)	(604)			207,070
Balance (shares) at Mar. 31, 2022	36,389,073	5,553,379
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock award liability accretion			44					44
Stock-based compensation expense			1,258					1,258
Net loss				(13,090)				(13,090)
Other comprehensive income					(315)			(315)
Balance at Jun. 30, 2022	$ 365	$ 55	$ 538,598	$ (343,132)	$ (919)			$ 194,967
Balance (shares) at Jun. 30, 2022	36,389,073	5,553,379