Securities - Additional Information (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2025	Dec. 31, 2024
Debt and Equity Securities, FV-NI [Line Items]
Debt securities held-to-maturity fair value	$ 347,997	$ 339,048
Acquired securities under merger combination	90,700
Sale of securities to pay down wholesale funding	78,900
Net increase from security transaction	$ 11,800
US Treasury Securities [Member] \| AA or Better [Member]
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Percent	100.00%
US States and Political Subdivisions Debt Securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Debt securities held-to-maturity fair value	$ 173,459	165,038
US States and Political Subdivisions Debt Securities [Member] \| A Rated [Member]
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Percent	10.00%
US States and Political Subdivisions Debt Securities [Member] \| AA or Better [Member]
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Percent	85.00%
US States and Political Subdivisions Debt Securities [Member] \| Unrated [Member]
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Percent	5.00%
Collateralized Mortgage-Backed Securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Debt securities held-to-maturity fair value	$ 152,623	$ 152,367
Collateralized Mortgage-Backed Securities [Member] \| AA [Member]
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Percent	47.00%
Collateralized Mortgage-Backed Securities [Member] \| AAA [Member]
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Percent	38.00%
Collateralized Mortgage-Backed Securities [Member] \| Unrated [Member]
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Percent	15.00%
Reclassified From Available-for-sale Securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Debt securities held-to-maturity fair value	$ 428,400
OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI for Amortization of Gain (Loss), after Tax	2,700
OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI Unamortized, After Tax	$ 1,800

Debt securities percent.

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- Definition

Net increase from security transaction.

+ References

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- Definition

Amount, after tax, of adjustment from accumulated other comprehensive income (loss) stay unamortized on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) from transfer to investment in debt security measured at amortized cost (held-to-maturity).

+ References

No definition available.

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- Definition

Sale of securities to pay down wholesale funding.

+ References

No definition available.

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- Definition

Amount of transaction cost incurred to effect business combination. Excludes separately recognized transaction and indirect cost.

+ References

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- Definition

Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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Amount, after tax, of adjustment from accumulated other comprehensive income (loss) for amortization of gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) from transfer to investment in debt security measured at amortized cost (held-to-maturity).

+ References

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- Definition

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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