Accounts and Long Term Receivable (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2021 USD ($) agreement	Mar. 31, 2020 USD ($)	Mar. 31, 2021 USD ($)	Mar. 31, 2020 USD ($)	Sep. 30, 2020 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 15,168		$ 15,168		$ 13,362
Long-term receivable	7,818		$ 7,818		3,642
Net revenue recorded	$ 500
Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maturity term of accounts and long term receivables			1 year
Vendor Agreement
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of agreements increase in accounts and long term receivable | agreement	2
Payments to be received from over next four years	$ 9,000		$ 9,000
Period of payments to be received for accounts and long term receivable			4 years
Financing receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	6,000		$ 6,000		2,300
Long-term receivable	$ 7,700		$ 7,700		3,500
Long term receivables interest rate	4.80%		4.80%
Amount of allowance for credit losses or impairments with a contractual maturity of over one year	$ 0		$ 0
Accounts and long-term receivable past due	0		0		0
Activity in allowance for credit losses for accounts and long-term receivables			$ 0	$ 0
Contract Receivable, Fiscal Year Maturity [Abstract]
2021					4,628
2022					3,860
2023					2,983
2024					1,560
2025					1,560
Total payments					14,591
Less: unearned income					910
Total, net of unearned income					$ 13,681
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	$ 126	$ 114	$ 218	$ 230