Dispositions (Details) - USD ($)	Aug. 23, 2022	Sep. 14, 2022	Aug. 12, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Amount receivable		$ 71,700,000
Walden e-Learning, LLC | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Amount receivable			$ 74,000,000
Proceeds from collection of escrow in notes receivable	$ 71,700,000