Fair Value Measurements - Foreclosed Assets Remeasured And Reported At Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Fair Value Disclosures [Abstract]
Foreclosed Assets Remeasured at Initial Recognition Carrying Value Of Foreclosed Assets Prior To Remeasurement	$ 2,633	$ 0
Foreclosed Assets Remeasured at Initial Recognition Charge-offs Recognized in the Allowance for credit losses	0	0
Fair Value of Foreclosed Assets Remeasured at Initial Recognition	$ 2,633	$ 0