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Investment Securities - Credit quality indicator (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
AAA/AA/A
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total debt securities held-to-maturity	$ 243,583	$ 238,404
AAA/AA/A | Obligations of states and political subdivisions
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total debt securities held-to-maturity	192,156	192,070
AAA/AA/A | Private label residential mortgage and asset backed securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total debt securities held-to-maturity	51,427	46,334
AAA/AA/A | Corporate debt securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total debt securities held-to-maturity	0	0
BBB
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total debt securities held-to-maturity	30,218	30,173
BBB | Obligations of states and political subdivisions
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total debt securities held-to-maturity	0	0
BBB | Private label residential mortgage and asset backed securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total debt securities held-to-maturity	0	0
BBB | Corporate debt securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total debt securities held-to-maturity	30,218	30,173
Unrated
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total debt securities held-to-maturity	17,629	24,158
Unrated | Obligations of states and political subdivisions
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total debt securities held-to-maturity	0	0
Unrated | Private label residential mortgage and asset backed securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total debt securities held-to-maturity	1,639	8,245
Unrated | Corporate debt securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total debt securities held-to-maturity	$ 15,990	$ 15,913

X

- 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

+ Details

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- Definition

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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