Goodwill and Other Intangible Assets - Summary of Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2021
Finite-Lived Intangible Assets, Net [Abstract]
Accumulated Amortization	$ (29,521)	$ (51,499)
Tradenames, net	225,573	142,848
Gross Carrying Amount	255,094	194,347
Net Carrying Amount	$ 225,573	142,848
Weighted Average Amortization Period (Yrs)	4 years 9 months 18 days
Trade Names
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amount		30,652
Accumulated Amortization		(30,652)
Total	$ 0
Weighted Average Amortization Period (Yrs)	5 years
Student rosters
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amount	$ 20,239	19,231
Accumulated Amortization	(20,239)	(19,231)
Total	0	0
Other
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amount	1,699	1,616
Accumulated Amortization	(1,699)	(1,616)
Total	0	0
Trade Names
Finite-Lived Intangible Assets, Net [Abstract]
Accumulated Amortization	(7,583)	(30,652)
Gross Carrying Amount		173,500
Net Carrying Amount		142,848
Trade Names
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amount	82,088
Accumulated Amortization	(7,583)
Tradenames, net	151,068	$ 142,848
Total	74,505
Gross Carrying Amount	233,156
Net Carrying Amount	$ 225,573