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Loans - Payment Status (Amortized Cost Basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Current
Financing Receivable, Past Due [Line Items]
Total LHFI	$ 14,529	$ 30,988
30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total LHFI	2,113	282
90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Total LHFI	2,122	0
Residential real estate | Current
Financing Receivable, Past Due [Line Items]
Total LHFI	1,660	14,283
Residential real estate | 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total LHFI	1,495	282
Residential real estate | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Total LHFI	115	0
Commercial and industrial | Current
Financing Receivable, Past Due [Line Items]
Total LHFI	12,865	16,705
Commercial and industrial | 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total LHFI	618
Commercial and industrial | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Total LHFI	2,007	0
Consumer | Current
Financing Receivable, Past Due [Line Items]
Total LHFI	4
Consumer | 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total LHFI	0
Consumer | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Total LHFI	0
Commercial real estate | Residential real estate | Current
Financing Receivable, Past Due [Line Items]
Total LHFI	272	8,280
Commercial real estate | Residential real estate | 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total LHFI	10	0
Commercial real estate | Residential real estate | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Total LHFI	0	0
Construction/land/land development | Residential real estate | Current
Financing Receivable, Past Due [Line Items]
Total LHFI	452	3,808
Construction/land/land development | Residential real estate | 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total LHFI	0	0
Construction/land/land development | Residential real estate | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Total LHFI	0	0
Residential real estate | Residential real estate | Current
Financing Receivable, Past Due [Line Items]
Total LHFI	936	2,195
Residential real estate | Residential real estate | 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total LHFI	1,485	282
Residential real estate | Residential real estate | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Total LHFI	$ 115	$ 0

X

- Definition

Amortized cost excluding accrued interest, of financing receivable 12 months after modification for debtor experiencing financial difficulty.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-42

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-14

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 80
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-80

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