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Debt (Debt Issuance Costs) (Detail) $ in Thousands | 9 Months Ended
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Mar. 31, 2021 USD ($)
Deferred Debt Issuance Costs at June 30, 2020 | $ 6,401
Deferred Debt Issuance Costs For Credit Agreement | 18,047
Amortization of Deferred Debt Issuance Costs | (1,548)
Deferred debt issuance costs as of September 30, 2020 | 22,900
Revolver [Member] |
Deferred Debt Issuance Costs at June 30, 2020 | 1,516
Deferred Debt Issuance Costs For Credit Agreement | 707
Amortization of Deferred Debt Issuance Costs | (509)
Deferred debt issuance costs as of September 30, 2020 | 1,714
Senior Secured Notes Due 2028 [Member] |
Deferred Debt Issuance Costs at June 30, 2020 | 0
Deferred Debt Issuance Costs For Credit Agreement | 16,325
Amortization of Deferred Debt Issuance Costs | (194)
Deferred debt issuance costs as of September 30, 2020 | 16,131
Term B Loan [Member] |
Deferred Debt Issuance Costs at June 30, 2020 | 4,885
Deferred Debt Issuance Costs For Credit Agreement | 1,015
Amortization of Deferred Debt Issuance Costs | (845)
Deferred debt issuance costs as of September 30, 2020 | $ 5,055

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