Net Loss Per Share - Computation of basic and diluted loss per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerator:
Net loss	$ (23,581)	$ (789)	$ (68,147)	$ (12,114)
Net income attributable to the redeemable noncontrolling interest		85	164	145
Net income (loss) attributable to noncontrolling interests	184	(292)	348	(310)
Net loss attributable to holders of Class A common stock and Class B common stock- Basic	(23,765)	(582)	(68,659)	(11,949)
Net loss attributable to holders of Class A, Class B, and Class C common stock- Diluted	$ (23,765)	$ (582)	$ (68,659)	$ (11,949)
Denominator:
Weighted-average shares - basic	137,381	18,550	136,906	16,878
Weighted-average shares - diluted	137,381	18,550	136,906	16,878
Net loss per common share - basic	$ (0.17)	$ (0.03)	$ (0.50)	$ (0.71)
Net loss per common share - diluted	$ (0.17)	$ (0.03)	$ (0.50)	$ (0.71)