Fair Value of Financial Assets and Liabilities (Details) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2021	Sep. 30, 2020
Fair Value, Recurring
Assets:
Assets, Fair Value Disclosure	$ 0
Liabilities Fair Value Disclosure	0
Fair Value, Nonrecurring
Assets:
Assets, Fair Value Disclosure		$ 0
Liabilities Fair Value Disclosure	$ 0
Minimum
Liabilities:
Maturity term of accounts and long term receivables	1 year
Carrying Amount
Assets:
Cash and cash equivalents	$ 20,397	19,264
Accounts and long-term receivable	13,681	5,839
Liabilities:
Accounts payable and accrued expenses and other long-term liabilities	7,626
Notes payable	1,771	4,098
Fair Value
Assets:
Cash and cash equivalents	20,397	19,264
Accounts and long-term receivable	13,681	5,839
Liabilities:
Accounts payable and accrued expenses and other long-term liabilities	7,626
Notes payable	$ 1,771	$ 4,098