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Accounts and Long-Term Receivable (Details) $ in Thousands	3 Months Ended			9 Months Ended
	Jun. 30, 2023 USD ($) agreement	Dec. 31, 2022 USD ($) agreement	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Sep. 30, 2022 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 23,523			$ 23,523		$ 22,993
Long-term receivable	$ 8,361			8,361		7,412
Number of agreements increase in accounts and long term receivable | agreement	1	1
Payments to be received from transaction over next two years		$ 3,000
Payments to be received from transaction over next four years	$ 3,100			$ 3,100
Period of payments to be received for accounts and long term receivable	4 years	2 years
Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maturity term of accounts and long term receivables				1 year
Financing receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 8,200			$ 8,200		8,900
Long-term receivable	$ 8,400			$ 8,400		7,400
Long term receivables interest rate	5.80%			5.80%
Amount of allowance for credit losses or impairments with a contractual maturity of over one year	$ 0			$ 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	0	$ 0
Construction Contractor, Receivable, Excluding Contract Retainage, Fiscal Year Maturity [Abstract]
2023	5,889			5,889
2024	7,487			7,487
2025	2,941			2,941
2026	628			628
2027	628			628
Total payments	17,573			17,573
Less: unearned interest income	(977)			(977)
Total, net of unearned interest income	16,596			$ 16,596
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	$ 234		$ 108	$ 605	$ 369

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