Loans And Allowance For Credit Losses (Schedule Of Credit Quality Of Residential Loan Receivables By An Internally Assigned Grade) (Details) - USD ($)
$ in Thousands |
Jun. 30, 2025 |
Sep. 30, 2024 |
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Loans held for investment |
|
$ 15,668,537
|
$ 15,392,061
|
| Other Loans [Member] |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Loans held for investment |
|
7,745
|
5,705
|
| Other Loans [Member] | Nonperforming |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Total |
|
0
|
0
|
| Real Estate Loans |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Year One, Originated, Current Fiscal Year |
|
827,717
|
888,026
|
| Year Two, Originated, Fiscal Year before Current Fiscal Year |
|
736,539
|
1,669,418
|
| Year Three, Originated, Two Years before Current Fiscal Year |
|
1,546,936
|
2,994,890
|
| Year Four, Originated, Three Years before Current Fiscal Year |
|
2,781,654
|
1,862,325
|
| Year Five, Originated, Four Years before Current Fiscal Year |
|
1,700,359
|
1,212,706
|
| Originated, More than Five Years before Current Fiscal Year |
|
4,148,556
|
3,398,848
|
| Revolving Loans Amortized Cost Basis |
|
3,860,357
|
3,300,466
|
| Revolving Loans Converted to Term |
|
58,674
|
59,677
|
| Loans held for investment |
|
15,660,792
|
15,386,356
|
| Real Estate Loans | Pass |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Year One, Originated, Current Fiscal Year |
|
827,408
|
887,737
|
| Year Two, Originated, Fiscal Year before Current Fiscal Year |
|
735,395
|
1,666,980
|
| Year Three, Originated, Two Years before Current Fiscal Year |
|
1,544,037
|
2,992,222
|
| Year Four, Originated, Three Years before Current Fiscal Year |
|
2,777,621
|
1,859,977
|
| Year Five, Originated, Four Years before Current Fiscal Year |
|
1,697,629
|
1,210,849
|
| Originated, More than Five Years before Current Fiscal Year |
|
4,123,160
|
3,373,883
|
| Revolving Loans Amortized Cost Basis |
|
3,845,469
|
3,290,851
|
| Revolving Loans Converted to Term |
|
52,958
|
54,190
|
| Loans held for investment |
|
15,603,677
|
15,336,689
|
| Real Estate Loans | Special Mention |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Year One, Originated, Current Fiscal Year |
|
309
|
111
|
| Year Two, Originated, Fiscal Year before Current Fiscal Year |
|
837
|
613
|
| Year Three, Originated, Two Years before Current Fiscal Year |
|
231
|
101
|
| Year Four, Originated, Three Years before Current Fiscal Year |
|
21
|
1,050
|
| Year Five, Originated, Four Years before Current Fiscal Year |
|
0
|
0
|
| Originated, More than Five Years before Current Fiscal Year |
|
739
|
846
|
| Revolving Loans Amortized Cost Basis |
|
5,953
|
3,735
|
| Revolving Loans Converted to Term |
|
269
|
607
|
| Loans held for investment |
|
8,359
|
7,063
|
| Real Estate Loans | Substandard |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Year One, Originated, Current Fiscal Year |
|
0
|
178
|
| Year Two, Originated, Fiscal Year before Current Fiscal Year |
|
307
|
1,825
|
| Year Three, Originated, Two Years before Current Fiscal Year |
|
2,668
|
2,567
|
| Year Four, Originated, Three Years before Current Fiscal Year |
|
4,012
|
1,298
|
| Year Five, Originated, Four Years before Current Fiscal Year |
|
2,730
|
1,857
|
| Originated, More than Five Years before Current Fiscal Year |
|
24,657
|
24,119
|
| Revolving Loans Amortized Cost Basis |
|
8,935
|
5,880
|
| Revolving Loans Converted to Term |
|
5,447
|
4,880
|
| Loans held for investment |
|
48,756
|
42,604
|
| Real Estate Loans | Residential Core |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Year One, Originated, Current Fiscal Year |
|
590,622
|
574,113
|
| Year Two, Originated, Fiscal Year before Current Fiscal Year |
|
480,602
|
1,502,557
|
| Year Three, Originated, Two Years before Current Fiscal Year |
|
1,410,191
|
2,937,384
|
| Year Four, Originated, Three Years before Current Fiscal Year |
|
2,733,865
|
1,843,723
|
| Year Five, Originated, Four Years before Current Fiscal Year |
|
1,685,402
|
1,207,516
|
| Originated, More than Five Years before Current Fiscal Year |
|
4,095,748
|
3,343,561
|
| Revolving Loans Amortized Cost Basis |
|
0
|
0
|
| Revolving Loans Converted to Term |
|
0
|
0
|
| Loans held for investment |
|
10,996,430
|
11,408,854
|
| Real Estate Loans | Residential Core | Pass |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Year One, Originated, Current Fiscal Year |
|
590,622
|
573,935
|
| Year Two, Originated, Fiscal Year before Current Fiscal Year |
|
480,437
|
1,500,928
|
| Year Three, Originated, Two Years before Current Fiscal Year |
|
1,408,531
|
2,934,968
|
| Year Four, Originated, Three Years before Current Fiscal Year |
|
2,730,062
|
1,841,516
|
| Year Five, Originated, Four Years before Current Fiscal Year |
|
1,682,782
|
1,205,702
|
| Originated, More than Five Years before Current Fiscal Year |
|
4,074,281
|
3,323,146
|
| Revolving Loans Amortized Cost Basis |
|
0
|
0
|
| Revolving Loans Converted to Term |
|
0
|
0
|
| Loans held for investment |
|
10,966,715
|
11,380,195
|
| Real Estate Loans | Residential Core | Special Mention |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Year One, Originated, Current Fiscal Year |
|
0
|
0
|
| Year Two, Originated, Fiscal Year before Current Fiscal Year |
|
0
|
0
|
| Year Three, Originated, Two Years before Current Fiscal Year |
|
0
|
0
|
| Year Four, Originated, Three Years before Current Fiscal Year |
|
0
|
1,050
|
| Year Five, Originated, Four Years before Current Fiscal Year |
|
0
|
0
|
| Originated, More than Five Years before Current Fiscal Year |
|
723
|
795
|
| Revolving Loans Amortized Cost Basis |
|
0
|
0
|
| Revolving Loans Converted to Term |
|
0
|
0
|
| Loans held for investment |
|
723
|
1,845
|
| Real Estate Loans | Residential Core | Substandard |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Year One, Originated, Current Fiscal Year |
|
0
|
178
|
| Year Two, Originated, Fiscal Year before Current Fiscal Year |
|
165
|
1,629
|
| Year Three, Originated, Two Years before Current Fiscal Year |
|
1,660
|
2,416
|
| Year Four, Originated, Three Years before Current Fiscal Year |
|
3,803
|
1,157
|
| Year Five, Originated, Four Years before Current Fiscal Year |
|
2,620
|
1,814
|
| Originated, More than Five Years before Current Fiscal Year |
|
20,744
|
19,620
|
| Revolving Loans Amortized Cost Basis |
|
0
|
0
|
| Revolving Loans Converted to Term |
|
0
|
0
|
| Loans held for investment |
|
28,992
|
26,814
|
| Real Estate Loans | Residential Home Today |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Year One, Originated, Current Fiscal Year |
[1] |
0
|
0
|
| Year Two, Originated, Fiscal Year before Current Fiscal Year |
[1] |
0
|
0
|
| Year Three, Originated, Two Years before Current Fiscal Year |
[1] |
0
|
0
|
| Year Four, Originated, Three Years before Current Fiscal Year |
[1] |
0
|
0
|
| Year Five, Originated, Four Years before Current Fiscal Year |
[1] |
0
|
0
|
| Originated, More than Five Years before Current Fiscal Year |
[1] |
37,009
|
40,471
|
| Revolving Loans Amortized Cost Basis |
[1] |
0
|
0
|
| Revolving Loans Converted to Term |
[1] |
0
|
0
|
| Loans held for investment |
[1] |
37,009
|
40,471
|
| Real Estate Loans | Residential Home Today | Pass |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Year One, Originated, Current Fiscal Year |
[1] |
0
|
0
|
| Year Two, Originated, Fiscal Year before Current Fiscal Year |
[1] |
0
|
0
|
| Year Three, Originated, Two Years before Current Fiscal Year |
[1] |
0
|
0
|
| Year Four, Originated, Three Years before Current Fiscal Year |
[1] |
0
|
0
|
| Year Five, Originated, Four Years before Current Fiscal Year |
[1] |
0
|
0
|
| Originated, More than Five Years before Current Fiscal Year |
[1] |
33,275
|
36,116
|
| Revolving Loans Amortized Cost Basis |
[1] |
0
|
0
|
| Revolving Loans Converted to Term |
[1] |
0
|
0
|
| Loans held for investment |
[1] |
33,275
|
36,116
|
| Real Estate Loans | Residential Home Today | Special Mention |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Total |
|
0
|
0
|
| Real Estate Loans | Residential Home Today | Substandard |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Year One, Originated, Current Fiscal Year |
[1] |
0
|
0
|
| Year Two, Originated, Fiscal Year before Current Fiscal Year |
[1] |
0
|
0
|
| Year Three, Originated, Two Years before Current Fiscal Year |
[1] |
0
|
0
|
| Year Four, Originated, Three Years before Current Fiscal Year |
[1] |
0
|
0
|
| Year Five, Originated, Four Years before Current Fiscal Year |
[1] |
0
|
0
|
| Originated, More than Five Years before Current Fiscal Year |
[1] |
3,734
|
4,355
|
| Revolving Loans Amortized Cost Basis |
[1] |
0
|
0
|
| Revolving Loans Converted to Term |
[1] |
0
|
0
|
| Loans held for investment |
[1] |
3,734
|
4,355
|
| Real Estate Loans | Home Equity Line of Credit |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Year One, Originated, Current Fiscal Year |
|
0
|
0
|
| Year Two, Originated, Fiscal Year before Current Fiscal Year |
|
0
|
0
|
| Year Three, Originated, Two Years before Current Fiscal Year |
|
0
|
0
|
| Year Four, Originated, Three Years before Current Fiscal Year |
|
0
|
0
|
| Year Five, Originated, Four Years before Current Fiscal Year |
|
0
|
0
|
| Originated, More than Five Years before Current Fiscal Year |
|
0
|
0
|
| Revolving Loans Amortized Cost Basis |
|
3,860,357
|
3,300,466
|
| Revolving Loans Converted to Term |
|
58,674
|
59,677
|
| Loans held for investment |
|
3,919,031
|
3,360,143
|
| Real Estate Loans | Home Equity Line of Credit | Pass |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Year One, Originated, Current Fiscal Year |
|
0
|
0
|
| Year Two, Originated, Fiscal Year before Current Fiscal Year |
|
0
|
0
|
| Year Three, Originated, Two Years before Current Fiscal Year |
|
0
|
0
|
| Year Four, Originated, Three Years before Current Fiscal Year |
|
0
|
0
|
| Year Five, Originated, Four Years before Current Fiscal Year |
|
0
|
0
|
| Originated, More than Five Years before Current Fiscal Year |
|
0
|
0
|
| Revolving Loans Amortized Cost Basis |
|
3,845,469
|
3,290,851
|
| Revolving Loans Converted to Term |
|
52,958
|
54,190
|
| Loans held for investment |
|
3,898,427
|
3,345,041
|
| Real Estate Loans | Home Equity Line of Credit | Special Mention |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Year One, Originated, Current Fiscal Year |
|
0
|
0
|
| Year Two, Originated, Fiscal Year before Current Fiscal Year |
|
0
|
0
|
| Year Three, Originated, Two Years before Current Fiscal Year |
|
0
|
0
|
| Year Four, Originated, Three Years before Current Fiscal Year |
|
0
|
0
|
| Year Five, Originated, Four Years before Current Fiscal Year |
|
0
|
0
|
| Originated, More than Five Years before Current Fiscal Year |
|
0
|
0
|
| Revolving Loans Amortized Cost Basis |
|
5,953
|
3,735
|
| Revolving Loans Converted to Term |
|
269
|
607
|
| Loans held for investment |
|
6,222
|
4,342
|
| Real Estate Loans | Home Equity Line of Credit | Substandard |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Year One, Originated, Current Fiscal Year |
|
0
|
0
|
| Year Two, Originated, Fiscal Year before Current Fiscal Year |
|
0
|
0
|
| Year Three, Originated, Two Years before Current Fiscal Year |
|
0
|
0
|
| Year Four, Originated, Three Years before Current Fiscal Year |
|
0
|
0
|
| Year Five, Originated, Four Years before Current Fiscal Year |
|
0
|
0
|
| Originated, More than Five Years before Current Fiscal Year |
|
0
|
0
|
| Revolving Loans Amortized Cost Basis |
|
8,935
|
5,880
|
| Revolving Loans Converted to Term |
|
5,447
|
4,880
|
| Loans held for investment |
|
14,382
|
10,760
|
| Real Estate Loans | Construction |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Loans held for investment |
|
7,651
|
10,015
|
| Real Estate Loans | Construction | Pass |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Year One, Originated, Current Fiscal Year |
|
4,673
|
7,932
|
| Year Two, Originated, Fiscal Year before Current Fiscal Year |
|
2,978
|
2,083
|
| Year Three, Originated, Two Years before Current Fiscal Year |
|
0
|
0
|
| Year Four, Originated, Three Years before Current Fiscal Year |
|
0
|
0
|
| Year Five, Originated, Four Years before Current Fiscal Year |
|
0
|
0
|
| Originated, More than Five Years before Current Fiscal Year |
|
0
|
0
|
| Revolving Loans Amortized Cost Basis |
|
0
|
0
|
| Revolving Loans Converted to Term |
|
0
|
0
|
| Loans held for investment |
|
7,651
|
10,015
|
| Real Estate Loans | Home Equity Loan |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Year One, Originated, Current Fiscal Year |
|
232,422
|
305,981
|
| Year Two, Originated, Fiscal Year before Current Fiscal Year |
|
252,959
|
164,778
|
| Year Three, Originated, Two Years before Current Fiscal Year |
|
136,745
|
57,506
|
| Year Four, Originated, Three Years before Current Fiscal Year |
|
47,789
|
18,602
|
| Year Five, Originated, Four Years before Current Fiscal Year |
|
14,957
|
5,190
|
| Originated, More than Five Years before Current Fiscal Year |
|
15,799
|
14,816
|
| Revolving Loans Amortized Cost Basis |
|
0
|
0
|
| Revolving Loans Converted to Term |
|
0
|
0
|
| Loans held for investment |
|
700,671
|
566,873
|
| Real Estate Loans | Home Equity Loan | Pass |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Year One, Originated, Current Fiscal Year |
|
232,113
|
305,870
|
| Year Two, Originated, Fiscal Year before Current Fiscal Year |
|
251,980
|
163,969
|
| Year Three, Originated, Two Years before Current Fiscal Year |
|
135,506
|
57,254
|
| Year Four, Originated, Three Years before Current Fiscal Year |
|
47,559
|
18,461
|
| Year Five, Originated, Four Years before Current Fiscal Year |
|
14,847
|
5,147
|
| Originated, More than Five Years before Current Fiscal Year |
|
15,604
|
14,621
|
| Revolving Loans Amortized Cost Basis |
|
0
|
0
|
| Revolving Loans Converted to Term |
|
0
|
0
|
| Loans held for investment |
|
697,609
|
565,322
|
| Real Estate Loans | Home Equity Loan | Special Mention |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Year One, Originated, Current Fiscal Year |
|
309
|
111
|
| Year Two, Originated, Fiscal Year before Current Fiscal Year |
|
837
|
613
|
| Year Three, Originated, Two Years before Current Fiscal Year |
|
231
|
101
|
| Year Four, Originated, Three Years before Current Fiscal Year |
|
21
|
0
|
| Year Five, Originated, Four Years before Current Fiscal Year |
|
0
|
0
|
| Originated, More than Five Years before Current Fiscal Year |
|
16
|
51
|
| Revolving Loans Amortized Cost Basis |
|
0
|
0
|
| Revolving Loans Converted to Term |
|
0
|
0
|
| Loans held for investment |
|
1,414
|
876
|
| Real Estate Loans | Home Equity Loan | Substandard |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Year One, Originated, Current Fiscal Year |
|
0
|
0
|
| Year Two, Originated, Fiscal Year before Current Fiscal Year |
|
142
|
196
|
| Year Three, Originated, Two Years before Current Fiscal Year |
|
1,008
|
151
|
| Year Four, Originated, Three Years before Current Fiscal Year |
|
209
|
141
|
| Year Five, Originated, Four Years before Current Fiscal Year |
|
110
|
43
|
| Originated, More than Five Years before Current Fiscal Year |
|
179
|
144
|
| Revolving Loans Amortized Cost Basis |
|
0
|
0
|
| Revolving Loans Converted to Term |
|
0
|
0
|
| Loans held for investment |
|
$ 1,648
|
$ 675
|
|
|