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Operating Leases - Lease Expense and Cash Payments & Weighted-Average Remaining Lease Term and Discount Rate (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2023
Mar. 31, 2022
Leases [Abstract]        
Operating lease expense $ 956 $ 979 $ 1,957 $ 1,978
Cash payments on lease liabilities $ 1,103 $ 1,090 $ 2,244 $ 2,176
Weighted-average remaining lease term 7 years 3 months 18 days 4 years 7 months 6 days 7 years 3 months 18 days 4 years 7 months 6 days
Weighted-average discount rate 5.79% 4.42% 5.79% 4.42%