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Product Warranty Obligation (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Standard Product Warranty Accrual [Roll Forward]        
Beginning balance $ 690 $ 923 $ 707 $ 942
Warranties issued 100 16 295 205
Settlements made (38) (146) (250) (354)
Ending balance $ 752 $ 793 $ 752 $ 793