Derivative Financial Instruments - Accumulated Other Comprehensive Income (Loss) and Statement of Operations (Details) - Interest Rate Swaps - Cash Flow Hedging - Hedging Instrument - Interest Expense - USD ($) $ in Thousands	3 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss) on Derivative, net of taxes	$ 41	$ 118
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income	$ (128)	$ (55)

Derivative Financial Instruments - Accumulated Other Comprehensive Income (Loss) and Statement of Operations (Details) - Interest Rate Swaps - Cash Flow Hedging - Hedging Instrument - Interest Expense - USD ($)
$ in Thousands

3 Months Ended

Dec. 31, 2022

Dec. 31, 2021

Derivative Instruments and Hedging Activities Disclosures [Line Items]

Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss) on Derivative, net of taxes

$ 41

$ 118

Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income

$ (128)

$ (55)