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Securities - Unrealized Loss Positions (Details) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 USD ($) security | Dec. 31, 2023 USD ($)
Fair value |  |
Less Than 12 Months, Fair Value | $ 23,579,000 | $ 13,573,000
12 Months or More, Fair Value | 334,010,000 | 365,904,000
Total Fair Value | 357,589,000 | 379,477,000
Unrealized Loss |  |
Less Than 12 Months, Unrealized Loss | 630,000 | 504,000
12 Months or More, Unrealized Loss | 35,325,000 | 33,609,000
Total Unrealized Loss | $ 35,955,000 | 34,113,000
Other information |  |
Number of positions | security | 513 |
Aggregate fair value | $ 357,589,000 | 379,477,000
Other than temporary impairment | 0 |
U.S. Treasury securities |  |
Fair value |  |
12 Months or More, Fair Value | 28,306,000 | 45,103,000
Total Fair Value | 28,306,000 | 45,103,000
Unrealized Loss |  |
12 Months or More, Unrealized Loss | 638,000 | 780,000
Total Unrealized Loss | 638,000 | 780,000
Other information |  |
Aggregate fair value | 28,306,000 | 45,103,000
U.S. government agencies and corporations |  |
Fair value |  |
12 Months or More, Fair Value | 74,718,000 | 87,094,000
Total Fair Value | 74,718,000 | 87,094,000
Unrealized Loss |  |
12 Months or More, Unrealized Loss | 9,662,000 | 9,313,000
Total Unrealized Loss | 9,662,000 | 9,313,000
Other information |  |
Aggregate fair value | 74,718,000 | 87,094,000
Mortgage-backed securities |  |
Fair value |  |
Less Than 12 Months, Fair Value | 6,491,000 | 5,528,000
12 Months or More, Fair Value | 147,290,000 | 150,023,000
Total Fair Value | 153,781,000 | 155,551,000
Unrealized Loss |  |
Less Than 12 Months, Unrealized Loss | 119,000 | 68,000
12 Months or More, Unrealized Loss | 17,431,000 | 16,155,000
Total Unrealized Loss | 17,550,000 | 16,223,000
Other information |  |
Aggregate fair value | 153,781,000 | 155,551,000
Obligations of states and political subdivisions |  |
Fair value |  |
Less Than 12 Months, Fair Value | 14,416,000 | 4,659,000
12 Months or More, Fair Value | 64,810,000 | 65,630,000
Total Fair Value | 79,226,000 | 70,289,000
Unrealized Loss |  |
Less Than 12 Months, Unrealized Loss | 183,000 | 72,000
12 Months or More, Unrealized Loss | 4,303,000 | 3,972,000
Total Unrealized Loss | 4,486,000 | 4,044,000
Other information |  |
Aggregate fair value | 79,226,000 | 70,289,000
Corporate and other debt securities |  |
Fair value |  |
Less Than 12 Months, Fair Value | 2,672,000 | 3,386,000
12 Months or More, Fair Value | 18,886,000 | 18,054,000
Total Fair Value | 21,558,000 | 21,440,000
Unrealized Loss |  |
Less Than 12 Months, Unrealized Loss | 328,000 | 364,000
12 Months or More, Unrealized Loss | 3,291,000 | 3,389,000
Total Unrealized Loss | 3,619,000 | 3,753,000
Other information |  |
Aggregate fair value | $ 21,558,000 | $ 21,440,000

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