Loans And Allowance For Loan Losses (Schedule Of Recorded Investment And The Unpaid Principal Balance Of Impaired Loans) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Sep. 30, 2019
Financing Receivable, Impaired [Line Items]
Impaired Loans, with No Related IVA, Recorded Investment	$ 68,527	$ 75,414
Impaired Loans, with No Related IVA, Unpaid Principal Balance	111,470	115,431
Impaired Loans, with an IVA, Recorded Investment	87,887	95,059
Impaired Loans, with an IVA, Unpaid Principal Balance	87,917	95,144
Impaired Loans, Recorded Investment	156,414	170,473
Impaired Loans, Unpaid Principal Balance	199,387	210,575
Allowance for loan losses, Individually Evaluated	12,890	13,505
Residential Core
Financing Receivable, Impaired [Line Items]
Impaired Loans, with No Related IVA, Recorded Investment	41,444	44,122
Impaired Loans, with No Related IVA, Unpaid Principal Balance	56,606	59,538
Impaired Loans, with an IVA, Recorded Investment	37,130	42,947
Impaired Loans, with an IVA, Unpaid Principal Balance	37,198	43,042
Impaired Loans, Recorded Investment	78,574	87,069
Impaired Loans, Unpaid Principal Balance	93,804	102,580
Allowance for loan losses, Individually Evaluated	6,784	7,080
Residential Home Today
Financing Receivable, Impaired [Line Items]
Impaired Loans, with No Related IVA, Recorded Investment	12,167	12,764
Impaired Loans, with No Related IVA, Unpaid Principal Balance	34,999	31,958
Impaired Loans, with an IVA, Recorded Investment	22,889	24,195
Impaired Loans, with an IVA, Unpaid Principal Balance	22,861	24,178
Impaired Loans, Recorded Investment	35,056	36,959
Impaired Loans, Unpaid Principal Balance	57,860	56,136
Allowance for loan losses, Individually Evaluated	2,286	2,422
Home Equity Loans And Lines Of Credit
Financing Receivable, Impaired [Line Items]
Impaired Loans, with No Related IVA, Recorded Investment	14,916	18,528
Impaired Loans, with No Related IVA, Unpaid Principal Balance	19,865	23,935
Impaired Loans, with an IVA, Recorded Investment	27,868	27,917
Impaired Loans, with an IVA, Unpaid Principal Balance	27,858	27,924
Impaired Loans, Recorded Investment	42,784	46,445
Impaired Loans, Unpaid Principal Balance	47,723	51,859
Allowance for loan losses, Individually Evaluated	$ 3,820	$ 4,003

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953550-111524

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Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524

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