v3.25.4

Derivative Instruments (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2025	Sep. 30, 2025
Carrying Amount
Derivative [Line Items]
Cash collateral received from or held by counterparty	$ 58,809	$ 6,910
Investment securities, available for sale	454,493	520,659
Estimated amount in AOCI to be reclassed in the next 12 months as a reduction to expense	1,751
Cash collateral received from or held by counterparty	58,809	6,910
Investment securities, available for sale	$ 454,493	$ 520,659
Interest Rate Swap | Cash Flow Hedging [Member] | Designated as Hedging Instrument
Derivative [Line Items]
Swap weighted average terms	2 years 8 months 12 days	2 years 8 months 12 days
Fair Value	$ 0
U.S. government and agency obligations
Derivative [Line Items]
Investment securities, available for sale	3,949	$ 53,955
U.S. government and agency obligations | Asset Pledged as Collateral | Margin requirement
Derivative [Line Items]
Investment securities, available for sale	$ 0	$ 50,032

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Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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