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Property and Equipment, Net (Additional Information) (Details) - USD ($) $ in Thousands	Jul. 31, 2019	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2020
Real Estate [Line Items]
Notes receivable		$ 21,960	$ 24,955	$ 19,437
Financing payables		$ 917	$ 907	$ 901
Discontinued Operations, Disposed of by Sale | Chicago, Illinois Campus [Member]
Real Estate [Line Items]
Proceeds from disposal	$ 52,000
Proceeds From Down Payment on Seller Loan	5,200
Receivable with Imputed Interest, Face Amount	$ 46,800
Receivable with Imputed Interest, Effective Yield (Interest Rate)	4.00%
Discontinued Operations, Disposed of by Sale | Chicago, Illinois Campus [Member] | Other Noncurrent Assets
Real Estate [Line Items]
Notes receivable	$ 40,300
Discontinued Operations, Disposed of by Sale | Chicago, Illinois Campus [Member] | Other Liabilities
Real Estate [Line Items]
Financing payables	$ 45,500

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