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Debt (Details) - USD ($)
$ in Thousands
Sep. 09, 2021
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Availability under senior credit facility        
Senior secured revolving credit facility   $ 200,000    
Borrowings outstanding   0 $ 9,208  
Compensating Balance, Amount $ 25,000      
Letters of Credit Outstanding, Amount $ 43,500 $ 41,300   $ 34,500