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Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Sep. 30, 2021
Debt Disclosure [Abstract]    
Long-term debt $ 67,827 $ 39,746
Letters of Credit Outstanding, Amount 5,292  
Line of Credit Facility, Remaining Borrowing Capacity 51,148  
Loans Payable to Bank, Noncurrent   40,339
Other Long-term Debt, Noncurrent 39 $ 63
Line of Credit Facility, Maximum Borrowing Capacity $ 125,000