Fair Value Measurements (Details) $ in Thousands		9 Months Ended
	Jul. 31, 2019 USD ($)	Mar. 31, 2023 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, gross		$ 708,283	$ 859,215	$ 1,253,333
Investment impairment		5,000
Equity Securities without Readily Determinable Fair Value, Amount		0	5,000
Senior Secured Notes Due 2028
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, gross		404,950	405,882	800,000
Senior Secured Notes Due 2028 | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, fair value		384,700
Term B Loan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, gross		303,333	453,333	453,333
Term B Loan | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, fair value		303,700
Other income (expense), net
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment impairment		5,000
Accounts Receivable | Credit extension program
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure		28,900	27,500	29,100
Nonqualified Deferred Compensation Plan | Accrued Liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred Compensation Liability, Current, Fair Value Disclosure		12,200	16,300	20,000
Nonqualified Deferred Compensation Plan | Prepaid Expenses and Other Current Assets | Investment in Rabbi Trust
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred Compensation Plan Assets, Fair Value Disclosure		$ 12,000	17,800	20,200
Chicago, Illinois Campus | Discontinued Operations, Disposed of by Sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Receivable with Imputed Interest, Face Amount	$ 46,800
Receivable with Imputed Interest, Effective Yield (Interest Rate)	4.00%
Receivable with Imputed Interest, Due Date	Jul. 31, 2024
Chicago, Illinois Campus | Discount rate | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Measurement Input		0.07
Chicago, Illinois Campus | Other Noncurrent Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure			44,000	43,600
Chicago, Illinois Campus | Other Noncurrent Assets | Discontinued Operations, Disposed of by Sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure			$ 44,000	$ 43,600