Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Payables and Accruals [Abstract]
Trade payables	$ 59,820	$ 64,049
Accrued compensation and benefits	30,955	33,160
Accrued student obligations	4,084	4,017
Real estate liabilities	640	668
Other	4,620	2,848
Accounts payable and accrued expenses	$ 100,119	$ 104,742