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v3.24.3

Allowance for Loan Losses - Loans Based on Credit Quality Indicators (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2024 | Sep. 30, 2023
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | $ 21,120,107 | $ 17,653,757
Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | $ 20,615,520 | $ 17,246,669
Pass | Accounts Receivable | Credit Concentration Risk |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total grade as a % of total loans | 97.60% | 97.70%
Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | $ 77,159 | $ 101,922
Special Mention | Accounts Receivable | Credit Concentration Risk |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total grade as a % of total loans | 0.40% | 0.60%
Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | $ 427,428 | $ 305,166
Substandard | Accounts Receivable | Credit Concentration Risk |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total grade as a % of total loans | 2.00% | 1.70%
Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | $ 0 | $ 0
Doubtful | Accounts Receivable | Credit Concentration Risk |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total grade as a % of total loans | 0.00% | 0.00%
Loss |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | $ 0 | $ 0
Loss | Accounts Receivable | Credit Concentration Risk |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total grade as a % of total loans | 0.00% | 0.00%
Commercial loans |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | $ 12,205,420 | $ 10,507,610
Commercial loans | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 11,723,996 | 10,119,666
Commercial loans | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 77,159 | 101,922
Commercial loans | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 404,265 | 286,022
Commercial loans | Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Commercial loans | Loss |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Commercial loans | Multi-family |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 4,556,200 | 2,886,594
Commercial loans | Multi-family | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 4,476,283 | 2,772,538
Commercial loans | Multi-family | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 12,377 | 90,428
Commercial loans | Multi-family | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 67,540 | 23,628
Commercial loans | Multi-family | Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Commercial loans | Multi-family | Loss |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Commercial loans | Commercial real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 3,732,155 | 3,310,101
Commercial loans | Commercial real estate | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 3,587,682 | 3,207,596
Commercial loans | Commercial real estate | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 40,297 | 4,847
Commercial loans | Commercial real estate | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 104,176 | 97,658
Commercial loans | Commercial real estate | Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Commercial loans | Commercial real estate | Loss |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Commercial loans | Commercial & industrial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 2,332,732 | 2,315,318
Commercial loans | Commercial & industrial | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 2,107,780 | 2,164,876
Commercial loans | Commercial & industrial | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 21,264 | 6,647
Commercial loans | Commercial & industrial | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 203,688 | 143,795
Commercial loans | Commercial & industrial | Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Commercial loans | Commercial & industrial | Loss |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Commercial loans | Construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 1,424,016 | 1,838,936
Commercial loans | Construction | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 1,392,332 | 1,818,266
Commercial loans | Construction | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 3,221 | 0
Commercial loans | Construction | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 28,463 | 20,670
Commercial loans | Construction | Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Commercial loans | Construction | Loss |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Commercial loans | Land - acquisition & development |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 160,317 | 156,661
Commercial loans | Land - acquisition & development | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 159,919 | 156,390
Commercial loans | Land - acquisition & development | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Commercial loans | Land - acquisition & development | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 398 | 271
Commercial loans | Land - acquisition & development | Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Commercial loans | Land - acquisition & development | Loss |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Consumer loans |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 8,914,687 | 7,146,147
Consumer loans | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 8,891,524 | 7,127,003
Consumer loans | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Consumer loans | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 23,163 | 19,144
Consumer loans | Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Consumer loans | Loss |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Consumer loans | Construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 182,415 | 324,451
Consumer loans | Construction | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 181,567 | 324,363
Consumer loans | Construction | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Consumer loans | Construction | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 848 | 88
Consumer loans | Construction | Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Consumer loans | Construction | Loss |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Consumer loans | Single-family residential |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 8,280,300 | 6,388,990
Consumer loans | Single-family residential | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 8,258,812 | 6,370,936
Consumer loans | Single-family residential | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Consumer loans | Single-family residential | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 21,488 | 18,054
Consumer loans | Single-family residential | Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Consumer loans | Single-family residential | Loss |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Consumer loans | Land - consumer lot loans |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 108,060 | 124,842
Consumer loans | Land - consumer lot loans | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 108,060 | 124,588
Consumer loans | Land - consumer lot loans | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Consumer loans | Land - consumer lot loans | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 254
Consumer loans | Land - consumer lot loans | Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Consumer loans | Land - consumer lot loans | Loss |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Consumer loans | HELOC |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 269,857 | 237,754
Consumer loans | HELOC | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 269,261 | 237,018
Consumer loans | HELOC | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Consumer loans | HELOC | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 596 | 736
Consumer loans | HELOC | Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Consumer loans | HELOC | Loss |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Consumer loans | Consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 74,055 | 70,110
Consumer loans | Consumer | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 73,824 | 70,098
Consumer loans | Consumer | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Consumer loans | Consumer | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 231 | 12
Consumer loans | Consumer | Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Consumer loans | Consumer | Loss |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | $ 0 | $ 0

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