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Allowance for Loan Losses - Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Beginning Allowance | $ 172,808 | $ 171,300
Charge-offs | (228) | (677)
Recoveries | 717 | 2,788
Provision & Transfers | 3,500 | (2,000)
Ending Allowance | 176,797 | 171,411
Unfunded commitments |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Provision & Transfers | (1,000) | 2,500
Commercial loans |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Beginning Allowance | 133,476 | 125,375
Charge-offs | (82) | (574)
Recoveries | 52 | 2,126
Provision & Transfers | 4,836 | 910
Ending Allowance | 138,282 | 127,837
Commercial loans | Multi-family |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Beginning Allowance | 12,013 | 16,949
Charge-offs | 0 | 0
Recoveries | 0 | 0
Provision & Transfers | 311 | (956)
Ending Allowance | 12,324 | 15,993
Commercial loans | Commercial real estate |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Beginning Allowance | 25,814 | 23,437
Charge-offs | 0 | (529)
Recoveries | 4 | 44
Provision & Transfers | 1,562 | 2,770
Ending Allowance | 27,380 | 25,722
Commercial loans | Commercial & industrial |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Beginning Allowance | 57,210 | 45,957
Charge-offs | (82) | (43)
Recoveries | 32 | 62
Provision & Transfers | 6,713 | 1,255
Ending Allowance | 63,873 | 47,231
Commercial loans | Construction |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Beginning Allowance | 26,161 | 25,585
Charge-offs | 0 | 0
Recoveries | 0 | 2,000
Provision & Transfers | (28) | (2,819)
Ending Allowance | 26,133 | 24,766
Commercial loans | Land - acquisition & development |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Beginning Allowance | 12,278 | 13,447
Charge-offs | 0 | (2)
Recoveries | 16 | 20
Provision & Transfers | (3,722) | 660
Ending Allowance | 8,572 | 14,125
Consumer loans |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Beginning Allowance | 39,332 | 45,925
Charge-offs | (146) | (103)
Recoveries | 665 | 662
Provision & Transfers | (1,336) | (2,910)
Ending Allowance | 38,515 | 43,574
Consumer loans | Construction |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Beginning Allowance | 3,410 | 4,907
Charge-offs | 0 | 0
Recoveries | 0 | 0
Provision & Transfers | 90 | (1,188)
Ending Allowance | 3,500 | 3,719
Consumer loans | Single-family residential |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Beginning Allowance | 25,518 | 30,978
Charge-offs | 0 | 0
Recoveries | 430 | 405
Provision & Transfers | (473) | (1,277)
Ending Allowance | 25,475 | 30,106
Consumer loans | Land - consumer lot loans |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Beginning Allowance | 5,047 | 4,939
Charge-offs | 0 | (27)
Recoveries | 0 | 5
Provision & Transfers | (905) | 67
Ending Allowance | 4,142 | 4,984
Consumer loans | HELOC |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Beginning Allowance | 2,482 | 2,390
Charge-offs | 0 | 0
Recoveries | 1 | 1
Provision & Transfers | 105 | (26)
Ending Allowance | 2,588 | 2,365
Consumer loans | Consumer |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Beginning Allowance | 2,875 | 2,711
Charge-offs | (146) | (76)
Recoveries | 234 | 251
Provision & Transfers | (153) | (486)
Ending Allowance | $ 2,810 | $ 2,400

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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
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