Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands		Total	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	Class A Common Stock [Member]	Class A Common Stock [Member] Common Stock [Member]		Class B Common Stock [Member]	Class B Common Stock [Member] Common Stock [Member]
Balance at Dec. 31, 2021		$ 90,488	$ 584,208	$ (491,817)	$ (2,101)		$ 160			$ 38
Balance (in shares) at Dec. 31, 2021							159,974,847			37,856,095
Shares issued in connection with certain agreements		19,005	19,003				$ 2
Shares issued in connection with certain agreements (in shares)							2,065,833
Restricted stock grants			(9)				$ 9
Restricted stock grants (in shares)							9,054,271
Shares issued in connection with employee stock purchase plan		2,742	2,742
Shares issued in connection with employee stock purchase plan (in shares)							409,997
Shares repurchased		(9,607)	(9,606)				$ (1)
Shares repurchased (in shares)							(1,209,015)
Restricted stock forfeitures			1				$ (1)
Restricted stock forfeitures (in shares)							(1,328,744)
Class B common stock transferred to Class A common stock							$ 6			$ (6)
Class B common stock transferred to Class A common stock (in shares)							5,756,793			(5,756,793)
Options exercised		199	199
Options exercised (in shares)							315,430
Stock-based compensation		304,386	304,386
Restricted stock units vesting (in shares)							227,505
Foreign currency translation adjustment		56			56
Net Income (Loss)		(279,239)		(279,239)
Balance at Dec. 31, 2022	[1]	128,030	900,924	(771,056)	(2,045)		$ 175			$ 32
Balance (in shares) at Dec. 31, 2022						132,909,894	175,266,917	[1]	15,512,217	32,099,302	[1]
Shares issued in connection with certain agreements		5,387	5,386				$ 1
Shares issued in connection with certain agreements (in shares)							651,369
Restricted stock grants			(11)				$ 11
Restricted stock grants (in shares)							11,467,755
Shares issued in connection with employee stock purchase plan		3,058	3,058
Shares issued in connection with employee stock purchase plan (in shares)							424,654
Shares repurchased		(15,421)	(15,421)
Shares repurchased (in shares)							(1,360,153)			(325,923)
Restricted stock forfeitures			1				$ (1)
Restricted stock forfeitures (in shares)							(1,241,675)
Class B common stock transferred to Class A common stock							$ 3			$ (3)
Class B common stock transferred to Class A common stock (in shares)							2,717,890			(2,717,890)
Performance stock units vesting (in shares)							142,500
Options exercised		241	241
Options exercised (in shares)							63,500
Stock-based compensation		246,671	246,671
Restricted stock units vesting (in shares)							498,675
Foreign currency translation adjustment		35			35
Net Income (Loss)		(187,481)		(187,481)
Balance at Dec. 31, 2023	[2]	180,520	1,140,849	(958,537)	(2,010)		$ 189			$ 29
Balance (in shares) at Dec. 31, 2023						150,989,571	188,631,432	[2]	17,886,352	29,055,489	[2]
Shares issued in connection with a follow-on public offering		228,956	228,946				$ 10
Shares issued in connection with a follow-on public offering (in shares)							10,304,716
Shares issued in connection with certain agreements		173,724	173,718				$ 6
Shares issued in connection with certain agreements (in shares)							5,948,199
Restricted stock grants			(2)				$ 2
Restricted stock grants (in shares)							1,550,343
Shares issued in connection with employee stock purchase plan		3,406	3,406
Shares issued in connection with employee stock purchase plan (in shares)							348,130
Shares repurchased		(41,080)	(41,078)				$ (2)
Shares repurchased (in shares)							(2,307,006)
Restricted stock forfeitures (in shares)							(755,180)
Class B common stock transferred to Class A common stock							$ 5			$ (5)
Class B common stock transferred to Class A common stock (in shares)							4,960,418			(4,960,418)
Performance stock units vested			(3)				$ 3
Performance stock units vesting (in shares)							3,539,683
Options exercised		3,175	3,175
Options exercised (in shares)							429,989
Stock-based compensation		197,874	197,874
Restricted stock units vesting (in shares)							524,455
Foreign currency translation adjustment		(3)			(3)
Net Income (Loss)		(69,771)		(69,771)
Balance at Dec. 31, 2024	[3]	$ 676,801	$ 1,706,885	$ (1,028,308)	$ (2,013)		$ 213			$ 24
Balance (in shares) at Dec. 31, 2024						193,189,610	213,175,179	[3]	17,776,198	24,095,071	[3]

[1] Includes 132,909,894 outstanding shares of Class A Common Stock, 15,512,217 outstanding shares of Class B Common Stock, 42,357,023 unvested shares of Class A restricted stock and 16,587,085 unvested shares of Class B restricted stock.

[2] Includes 150,989,571 outstanding shares of Class A Common Stock, 17,886,352 outstanding shares of Class B Common Stock, 37,641,861 unvested shares of Class A restricted stock and 11,169,137 unvested shares of Class B restricted stock.

[3] Includes 193,189,610 outstanding shares of Class A Common Stock, 17,776,198 outstanding shares of Class B Common Stock, 19,985,569 unvested shares of Class A restricted stock and 6,318,873 unvested shares of Class B restricted stock.