Investments, Gross Unrealized Losses and Fair Value and Net Unrealized Gains (Losses) (Details) $ in Thousands	Mar. 31, 2024 USD ($) Security	Dec. 31, 2023 USD ($)
Available-for-sale, Debt Securities, Fair Value and Gross Unrealized Losses [Abstract]
Number of securities owned with fair value less than cost \| Security	323
Less than twelve months, Fair value	$ 17,025	$ 10,690
Less than twelve months, Gross unrealized losses	(452)	(296)
Twelve months or greater, Fair value	374,546	392,449
Twelve months or greater, Gross unrealized losses	(37,862)	(35,731)
Total, Fair value	391,571	403,139
Total, Gross Unrealized Losses	(38,314)	(36,027)
U.S. Agency Securities [Member]
Available-for-sale, Debt Securities, Fair Value and Gross Unrealized Losses [Abstract]
Less than twelve months, Fair value	0	0
Less than twelve months, Gross unrealized losses	0	0
Twelve months or greater, Fair value	55,384	58,753
Twelve months or greater, Gross unrealized losses	(6,173)	(5,799)
Total, Fair value	55,384	58,753
Total, Gross Unrealized Losses	(6,173)	(5,799)
U.S. Treasury Securities [Member]
Available-for-sale, Debt Securities, Fair Value and Gross Unrealized Losses [Abstract]
Less than twelve months, Fair value	0	0
Less than twelve months, Gross unrealized losses	0	0
Twelve months or greater, Fair value	134,113	143,288
Twelve months or greater, Gross unrealized losses	(9,421)	(9,197)
Total, Fair value	134,113	143,288
Total, Gross Unrealized Losses	(9,421)	(9,197)
Obligations of State and Political Subdivisions [Member]
Available-for-sale, Debt Securities, Fair Value and Gross Unrealized Losses [Abstract]
Less than twelve months, Fair value	881	0
Less than twelve months, Gross unrealized losses	(1)	0
Twelve months or greater, Fair value	91,299	93,535
Twelve months or greater, Gross unrealized losses	(6,698)	(6,190)
Total, Fair value	92,180	93,535
Total, Gross Unrealized Losses	(6,699)	(6,190)
Corporate Obligations [Member]
Available-for-sale, Debt Securities, Fair Value and Gross Unrealized Losses [Abstract]
Less than twelve months, Fair value	1,494	1,487
Less than twelve months, Gross unrealized losses	(263)	(265)
Twelve months or greater, Fair value	8,203	8,320
Twelve months or greater, Gross unrealized losses	(1,077)	(971)
Total, Fair value	9,697	9,807
Total, Gross Unrealized Losses	(1,340)	(1,236)
Mortgage-backed Securities in Government Sponsored Entities [Member]
Available-for-sale, Debt Securities, Fair Value and Gross Unrealized Losses [Abstract]
Less than twelve months, Fair value	14,650	9,203
Less than twelve months, Gross unrealized losses	(188)	(31)
Twelve months or greater, Fair value	85,547	88,553
Twelve months or greater, Gross unrealized losses	(14,493)	(13,574)
Total, Fair value	100,197	97,756
Total, Gross Unrealized Losses	$ (14,681)	$ (13,605)

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