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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Nominal or face amount used to calculate payment on derivative.

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Number of interest rate derivative instruments held by the entity at the reporting date.

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Derivative Instruments - Schedule of Notional Amounts of Outstanding Derivative Positions (Details)	Sep. 30, 2022 USD ($) derivative_contract	Sep. 30, 2021 USD ($) derivative_contract
Forward starting interest rate swaps
Derivative [Line Items]
Number of Swap Agreements \| derivative_contract		1
Notional amount of interest rate swap agreements		$ 50,000,000
$250 Million Unsecured 2018 Term Loan \| Interest rate swaps
Derivative [Line Items]
Number of Swap Agreements \| derivative_contract	2
Notional amount of interest rate swap agreements	$ 100,000,000
Unsecured Debt \| $250 Million Unsecured 2018 Term Loan
Derivative [Line Items]
Debt instrument, face amount	250,000,000
Unsecured Debt \| $250 Million Unsecured 2018 Term Loan \| Interest rate swaps
Derivative [Line Items]
Debt instrument, face amount	$ 250,000,000