Adjustment to Retained Earnings, Net Of Deferred Tax, Adoption Of Accounting Standards Update

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Debt Securities, Held-to-Maturity, Allowance For Credit Loss, Excluding Accrued Interest, Adjustment

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Amount, excluding accrued interest, of allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of increase in allowance for credit loss on financing receivable from recovery.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

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Recent Accounting Pronouncements - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2023	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]
Adjustment to retained earnings, net of deferred tax; - adoption of ASU 2016-13			$ 488	$ 0
Adjustment to opening balance			461
Allowance for Credit Losses ("ACL")	$ 82		85		$ 0
Allowance for credit losses for unfunded loan commitments	364	$ 320	276	320	332	$ 320	$ 305
Recoveries	1
Financing Receivable, Allowance for Credit Loss, Writeoff	6	$ 6	$ 6	$ 6
Impact of Adopting CECL (ASU 2016-13)
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]
Allowance for Credit Losses ("ACL")	$ 0				92
Allowance for credit losses for unfunded loan commitments					$ 65		$ 0