Loans Receivable And Allowance For Credit Losses (Reserve for Off-Balance Sheet Credit Exposures) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	$ 3,672	$ 6,127	$ 5,743	$ 0
Provision for credit losses	141	34	(1,930)	(1,627)
Ending Balance	$ 3,813	$ 6,161	$ 3,813	6,161
Adoption of CECL [Member] | Accounting Standards Update 2016-13 [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance				7,788
Balance at October 1, 2020 [Member] | Accounting Standards Update 2016-13 [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance				$ 7,788