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Investment Securities: Credit Loss by Portfolio Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2024
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |
Beginning Allowance | $ 85 | $ 0
Provision for (Recapture of) Credit Losses | (13) | (20)
Ending Allowance | 72 | 72
Impact of Adopting CECL (ASU 2016-13) |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |
Beginning Allowance | 0 | 92
Private label residential |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |
Beginning Allowance | 77 | 0
Provision for (Recapture of) Credit Losses | (11) | (16)
Ending Allowance | 66 | 66
Private label residential | Impact of Adopting CECL (ASU 2016-13) |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |
Beginning Allowance | 0 | 82
Bank issued trust preferred securities |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |
Beginning Allowance | 8 | 0
Provision for (Recapture of) Credit Losses | (2) | (4)
Ending Allowance | 6 | 6
Bank issued trust preferred securities | Impact of Adopting CECL (ASU 2016-13) |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |
Beginning Allowance | $ 0 | $ 10

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- Definition Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Provision for (Recapture of) Credit Losses + References No definition available. + Details
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- Definition Amount, excluding accrued interest, of allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 + Details
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