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Schedule II (Valuation and Qualifying Accounts) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Allowance for accounts receivable for refunds [Member]      
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Year   $ 0 $ 387
Charged to Costs and Expenses     0
Charged to Other Accounts     (387)
Deductions     0
Balance at End of Year     0
Allowance for accounts receivable for uncollectible accounts [Member]      
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Year $ 26,515 14,532 18,838
Charged to Costs and Expenses 11,573 16,152 9,817
Charged to Other Accounts 0 0 832
Deductions 8,102 4,169 14,955
Balance at End of Year 29,986 26,515 14,532
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member]      
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Year 9,937 9,943 11,496
Charged to Costs and Expenses (847) 71 6,767
Charged to Other Accounts 0 (77) 4
Deductions 1,090 0 8,324
Balance at End of Year 8,000 9,937 9,943
SEC Schedule, 12-09, Reserve, Business Restructuring [Member]      
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Year 1,435 25,083 38,927
Charged to Costs and Expenses 490 4,955 8,870
Charged to Other Accounts 0 (25,030) 0
Deductions 1,925 3,573 22,714
Balance at End of Year $ 0 $ 1,435 $ 25,083