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Accounts and Long-Term Receivable (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Sep. 30, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Accounts receivable $ 19,134   $ 18,698
Long-term receivable $ 5,598   7,522
Minimum      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Maturity term of accounts and long term receivables 1 year    
Agreement      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Payments to be received from over next two years $ 500    
Period of payments to be received for accounts and long term receivable 2 years    
Net revenue recorded $ 100    
Financing receivables      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Accounts receivable 5,200   6,500
Long-term receivable $ 5,600   7,500
Long term receivables interest rate 4.80%    
Amount of allowance for credit losses or impairments with a contractual maturity of over one year $ 0    
Accounts and long-term receivable past due 0   $ 0
Activity in allowance for credit losses for accounts and long-term receivables 0 $ 0  
Construction Contractor, Receivable, Excluding Contract Retainage, Fiscal Year Maturity [Abstract]      
2022 3,449    
2023 4,830    
2024 1,560    
2025 1,560    
Total payments 11,399    
Less: unearned interest income 630    
Total, net of unearned interest income $ 10,769    
Financing receivables | Minimum      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Maturity term of accounts and long term receivables 1 year    
Financing receivables | Other Income      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Accounts And Long Term Receivable, Interest Income $ 139 $ 92