Condensed Consolidated Statements of Redeemable Noncontrolling Interest and Stockholders’ Equity (Deficit) - USD ($) $ in Thousands	Total	IPO	Additional Paid-In Capital	Additional Paid-In Capital IPO	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Redeemable Noncontrolling Interest	Convertible Preferred Stock	Convertible Preferred Stock IPO	Common Stock	Common Stock IPO
Balance at beginning of period at Dec. 31, 2019							$ 0
Balance at end of period at Mar. 31, 2020							0
Balance at beginning of period (in shares) at Dec. 31, 2019								109,090,908		220,157,922
Balance at beginning of period at Dec. 31, 2019	$ (256,567)		$ 235,190		$ (4,140)	$ (887,213)		$ 399,589		$ 7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercises and vesting of early exercised Class A common stock options (in shares)										442,503
Exercises and vesting of early exercised Class A common stock options	145		145
Repurchase of unvested Class A common stock related to early exercised stock (in shares)										(425,001)
Repurchase of Class A common stock (in shares)										(114,000)
Repurchase of Class A common stock	(760)		(760)
Stock-based compensation	3,462		3,462
Total other comprehensive loss, net	(1,903)				(1,903)
Net income (loss)	4,664					4,664
Balance at end of period (in shares) at Mar. 31, 2020								109,090,908		220,061,424
Balance at end of period at Mar. 31, 2020	(250,959)		238,037		(6,043)	(882,549)		$ 399,589		$ 7
Balance at beginning of period at Dec. 31, 2019							0
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income (loss)	320
Balance at end of period at Jun. 30, 2020							2,236
Balance at beginning of period (in shares) at Dec. 31, 2019								109,090,908		220,157,922
Balance at beginning of period at Dec. 31, 2019	(256,567)		235,190		(4,140)	(887,213)		$ 399,589		$ 7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(16,727)
Balance at end of period (in shares) at Jun. 30, 2020								109,090,908		219,964,017
Balance at end of period at Jun. 30, 2020	(226,468)		281,368		(3,492)	(903,940)		$ 399,589		$ 7
Balance at beginning of period at Mar. 31, 2020							0
Increase (Decrease) in Temporary Equity [Roll Forward]
Acquisition of noncontrolling interest							2,556
Net income (loss)	320						(320)
Balance at end of period at Jun. 30, 2020							2,236
Balance at beginning of period (in shares) at Mar. 31, 2020								109,090,908		220,061,424
Balance at beginning of period at Mar. 31, 2020	(250,959)		238,037		(6,043)	(882,549)		$ 399,589		$ 7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercises and vesting of early exercised Class A common stock options (in shares)										37,593
Exercises and vesting of early exercised Class A common stock options	117		117
Repurchase of Class A common stock (in shares)										(135,000)
Repurchase of Class A common stock	(1,006)		(1,006)
Issuance of common stock warrants and options in connection with an acquisition	39,040		39,040
Issuance of common stock warrants in connection with lease modification	433		433
Stock-based compensation	4,747		4,747
Total other comprehensive loss, net	2,551				2,551
Net income (loss)	(21,391)					(21,391)
Balance at end of period (in shares) at Jun. 30, 2020								109,090,908		219,964,017
Balance at end of period at Jun. 30, 2020	(226,468)		281,368		(3,492)	(903,940)		$ 399,589		$ 7
Balance at beginning of period at Dec. 31, 2020	309						309
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income (loss)							(54)
Balance at end of period at Mar. 31, 2021							255
Balance at beginning of period (in shares) at Dec. 31, 2020								109,090,908		226,364,401
Balance at beginning of period at Dec. 31, 2020	(158,545)		453,655		604	(1,012,400)		$ 399,589		$ 7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercises and vesting of early exercised Class A common stock options (in shares)										1,232,156
Exercises and vesting of early exercised Class A common stock options	10,143		10,143
Repurchase of Class A common stock (in shares)										(214,509)
Stock-based compensation	29,667		29,667
Total other comprehensive loss, net	(721)				(721)
Net income (loss)	(10,521)					(10,521)
Balance at end of period (in shares) at Mar. 31, 2021								109,090,908		227,382,048
Balance at end of period at Mar. 31, 2021	(129,977)		493,465		(117)	(1,022,921)		$ 399,589		$ 7
Balance at beginning of period at Dec. 31, 2020	309						309
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income (loss)	113
Balance at end of period at Jun. 30, 2021	196						196
Balance at beginning of period (in shares) at Dec. 31, 2020								109,090,908		226,364,401
Balance at beginning of period at Dec. 31, 2020	(158,545)		453,655		604	(1,012,400)		$ 399,589		$ 7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	3,902
Balance at end of period (in shares) at Jun. 30, 2021								0		372,165,319
Balance at end of period at Jun. 30, 2021	1,997,441		3,015,233		(9,305)	(1,008,498)		$ 0		$ 11
Balance at beginning of period at Mar. 31, 2021							255
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income (loss)	59						(59)
Balance at end of period at Jun. 30, 2021	196						$ 196
Balance at beginning of period (in shares) at Mar. 31, 2021								109,090,908		227,382,048
Balance at beginning of period at Mar. 31, 2021	(129,977)		493,465		(117)	(1,022,921)		$ 399,589		$ 7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercises and vesting of early exercised Class A common stock options (in shares)										1,020,588
Exercises and vesting of early exercised Class A common stock options	5,190		5,190
Exercise of warrant, net of shares withheld (in shares)										6,229,081
Repurchase of Class A common stock (in shares)										(390,000)
Issuance of common stock warrants and options in connection with an acquisition (in shares)										6,320,688
Issuance of common stock warrants and options in connection with an acquisition	342,170		342,170
Issuance of Class A common stock (in shares)										12,006
Issuance of Class A common stock in connection with initial public offering, net of issuance costs as adjusted for cost reimbursement (in shares)										22,500,000
Issuance of Class A common stock in connection with initial public offering, net of issuance costs as adjusted for cost reimbursement	1,747,971		1,747,970							$ 1
Conversion of preferred stock to common stock in connection with initial public offering (in shares)									(109,090,908)		109,090,908
Conversion of preferred stock to common stock in connection with initial public offering		$ 0		$ 399,586					$ (399,589)		$ 3
Stock-based compensation	26,852		26,852
Total other comprehensive loss, net	(9,188)				(9,188)
Net income (loss)	14,423					14,423
Balance at end of period (in shares) at Jun. 30, 2021								0		372,165,319
Balance at end of period at Jun. 30, 2021	$ 1,997,441		$ 3,015,233		$ (9,305)	$ (1,008,498)		$ 0		$ 11