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Commitments and Contingencies - Product Warranties (Details) - USD ($)
$ in Thousands
9 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Changes in provision for warranties    
Warranty provision at beginning of period $ 20,825 $ 21,724
Additions and adjustments 3,759 6,105
Reductions for warranty repair costs (4,975) (6,557)
Warranty provision at end of period $ 19,609 $ 21,272