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Fair Value of Financial Assets and Liabilities (Details) - USD ($)
$ in Thousands
 9 Months Ended
Jun. 30, 2021
Sep. 30, 2020
Fair Value, Recurring    
Assets:    
Assets, Fair Value Disclosure $ 0 $ 0
Liabilities Fair Value Disclosure 0 0
Fair Value, Nonrecurring    
Assets:    
Assets, Fair Value Disclosure 0 0
Liabilities Fair Value Disclosure $ 0 0
Minimum    
Liabilities:    
Maturity term of accounts and long term receivables 1 year  
Carrying Amount    
Assets:    
Cash and cash equivalents $ 19,653 19,264
Accounts and long-term receivable 12,665 5,839
Liabilities:    
Accounts payable and accrued expenses and other long-term liabilities 5,272  
Line of Credit 1,654 1,573
Notes payable 1,702 4,098
Fair Value    
Assets:    
Cash and cash equivalents 19,653 19,264
Accounts and long-term receivable 12,665 5,839
Liabilities:    
Accounts payable and accrued expenses and other long-term liabilities 5,272  
Line of Credit 1,654 1,573
Notes payable $ 1,702 $ 4,098