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Investment Securities - Schedule of Bond Ratings For Held-to-Maturity Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Held to maturity, amortized cost	$ 811,751	$ 879,199
Obligations of state and political subdivisions
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Held to maturity, amortized cost	61,204	61,560
Corporate bonds
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Held to maturity, amortized cost	15,000	30,000
Aaa / AAA | Obligations of state and political subdivisions
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Held to maturity, amortized cost	38,388	42,161
Aaa / AAA | Corporate bonds
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Held to maturity, amortized cost	0	0
Aa1 / AA+ | Obligations of state and political subdivisions
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Held to maturity, amortized cost	22,816	19,399
Aa1 / AA+ | Corporate bonds
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Held to maturity, amortized cost	0	0
A2 / A | Obligations of state and political subdivisions
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Held to maturity, amortized cost	0	0
A2 / A | Corporate bonds
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Held to maturity, amortized cost	$ 15,000	$ 30,000

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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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-5

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Amount excluding accrued interest, before allowance for credit loss, of 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

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-5

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