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Commitments and Contingencies - Warranty provisions (Details) - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Changes in provision for warranties    
Balance at beginning of period $ 11,149 $ 13,347
Additions 312 884
Reductions for warranty repair costs and adjustments (902) (1,972)
Balance at end of period $ 10,559 $ 12,259