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Acquisitions - Schedule of Intangible Assets Acquired (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 01, 2022	Sep. 30, 2022	Jun. 30, 2022	Nov. 01, 2021
Asset Acquisition [Line Items]
Net Book Value	$ 19,148			$ 16,244
Concorde
Asset Acquisition [Line Items]
Net Book Value		$ 5,400
MIAT College of Technology
Asset Acquisition [Line Items]
Net Book Value					$ 16,200
Trademarks, trade names and other
Asset Acquisition [Line Items]
Finite-lived intangible assets, net book value	1,345
Trademarks, trade names and other \| Concorde
Asset Acquisition [Line Items]
Weighted Average Remaining Useful Life (Years)		10 years
Finite-lived intangible assets, net book value		$ 500
Curriculum development
Asset Acquisition [Line Items]
Finite-lived intangible assets, net book value	1,503			347
Curriculum development \| Concorde
Asset Acquisition [Line Items]
Weighted Average Remaining Useful Life (Years)		5 years
Finite-lived intangible assets, net book value		$ 1,400
Curriculum development \| MIAT College of Technology
Asset Acquisition [Line Items]
Weighted Average Remaining Useful Life (Years)					5 years
Finite-lived intangible assets, net book value					$ 400
Accreditations and regulatory approvals
Asset Acquisition [Line Items]
Indefinite-lived intangible assets, gross carrying amount	$ 16,300			12,800
Accreditations and regulatory approvals \| Concorde
Asset Acquisition [Line Items]
Indefinite-lived intangible assets, gross carrying amount		$ 3,500
Accreditations and regulatory approvals \| MIAT College of Technology
Asset Acquisition [Line Items]
Indefinite-lived intangible assets, gross carrying amount					12,800
Trademarks, trade names and other
Asset Acquisition [Line Items]
Indefinite-lived intangible assets, gross carrying amount				$ 3,000
Trademarks, trade names and other \| MIAT College of Technology
Asset Acquisition [Line Items]
Weighted Average Remaining Useful Life (Years)			4 years
Indefinite-lived intangible assets, gross carrying amount					$ 3,000