Significant Accounting Policies - Schedule of Tuition Receivable and Allowance for Credit Losses (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Tuition receivable	$ 129,999	$ 123,357
Allowance for credit losses	(46,917)	(47,255)
Tuition receivable, net	83,082	76,102
Tuition receivable, noncurrent	2,470	2,516
Other Noncurrent Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Tuition receivable, noncurrent	$ 2,500	$ 2,500