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Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]      
Useful life - acquired 3 years    
Amortization expenses $ 14,350,000 $ 51,495,000 $ 64,225,000
Trade names      
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]      
Impairment of intangible assets 0 0 0
Student relationships      
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]      
Amortization expenses $ 11,100,000 $ 44,300,000 $ 57,300,000