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Accounts and Long Term Receivable (Details) $ in Thousands	3 Months Ended			9 Months Ended
	Jun. 30, 2021 USD ($) agreement	Mar. 31, 2021 USD ($) agreement	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Sep. 30, 2020 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 16,301			$ 16,301		$ 13,362
Long-term receivable	$ 8,117			$ 8,117		3,642
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	2
Payments to be received from over next four years		$ 9,000
Payments to be received from over next two years	$ 5,200
Period of payments to be received for accounts and long term receivable	2 years	4 years
Net revenue recorded	$ 400	$ 500
Financing receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	4,600			$ 4,600		2,300
Long-term receivable	$ 8,100			$ 8,100		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
Construction Contractor, Receivable, Excluding Contract Retainage, Fiscal Year Maturity [Abstract]
2021 (3 months)						1,280
2022						4,991
2023						4,115
2024						1,560
2025						1,560
Total payments						13,506
Less: unearned income						841
Total, net of unearned income						$ 12,665
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	$ 169		$ 120	$ 387	$ 349

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