Fair Value - Quantitative information about recurring and non-recurring Level 3 fair value measurements (Details) $ in Thousands	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
State and municipal obligations \| Level 3
Fair Value Measurement Inputs and Valuation Techniques
Fair Value	$ 805	$ 1,180
State and municipal obligations \| Minimum \| Discount rate
Fair Value Measurement Inputs and Valuation Techniques
Range of Inputs (percent)	0.0424	0.0404
State and municipal obligations \| Maximum \| Discount rate
Fair Value Measurement Inputs and Valuation Techniques
Range of Inputs (percent)	0.0444	0.0444
Collateralized debt obligations \| Discount rate
Fair Value Measurement Inputs and Valuation Techniques
Range of Inputs (percent)	0.0732	0.0736
Collateralized debt obligations \| Level 3
Fair Value Measurement Inputs and Valuation Techniques
Fair Value	$ 2,888	$ 3,002
Collateral dependent loans \| Level 3
Fair Value Measurement Inputs and Valuation Techniques
Fair Value	$ 10,343	$ 11,306
Collateral dependent loans \| Minimum \| Discount rate
Fair Value Measurement Inputs and Valuation Techniques
Range of Inputs (percent)	0.1000	0.0000
Collateral dependent loans \| Maximum \| Discount rate
Fair Value Measurement Inputs and Valuation Techniques
Range of Inputs (percent)	1.0000	1.0000

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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- Definition

Value of input used to measure investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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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

No definition available.

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