Loans Receivable And Allowance For Credit Losses (Reserve for Off-Balance Sheet Credit Exposures) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	$ 5,743	$ 0
Provision for credit losses	(1,120)	(1,355)
Ending Balance	$ 4,623	6,433
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