Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Payables and Accruals [Abstract]
Trade payables	$ 54,727	$ 64,049
Accrued compensation and benefits	33,220	33,160
Accrued student obligations	4,536	4,017
Real estate liabilities	638	668
Other	4,327	2,848
Accounts payable and accrued expenses	$ 97,448	$ 104,742