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Investment Securities - Schedule of Held to Maturity Securities Been in Continuous Loss Position (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Fair Value |  |
Less Than 12 Months | $ 41,408 | $ 18,751
12 Months or Greater | 307,229 | 364,269
Total | 348,637 | 383,020
Gross Unrealized Losses |  |
Less Than 12 Months | (5,133) | (374)
12 Months or Greater | (30,428) | (46,683)
Total | (35,561) | (47,057)
U.S. treasury securities |  |
Fair Value |  |
Less Than 12 Months | 0 | 0
12 Months or Greater | 63,882 | 88,176
Total | 63,882 | 88,176
Gross Unrealized Losses |  |
Less Than 12 Months | 0 | 0
12 Months or Greater | (1,244) | (2,828)
Total | (1,244) | (2,828)
U.S. agency securities |  |
Fair Value |  |
Less Than 12 Months | 0 | 0
12 Months or Greater | 8,312 | 14,888
Total | 8,312 | 14,888
Gross Unrealized Losses |  |
Less Than 12 Months | 0 | 0
12 Months or Greater | (736) | (1,263)
Total | (736) | (1,263)
State, county & municipal securities |  |
Fair Value |  |
Less Than 12 Months | 41,408 | 18,751
12 Months or Greater | 77,889 | 102,524
Total | 119,297 | 121,275
Gross Unrealized Losses |  |
Less Than 12 Months | (5,133) | (374)
12 Months or Greater | (8,124) | (15,541)
Total | (13,257) | (15,915)
Mortgage-backed securities |  |
Fair Value |  |
Less Than 12 Months | 0 | 0
12 Months or Greater | 157,146 | 158,681
Total | 157,146 | 158,681
Gross Unrealized Losses |  |
Less Than 12 Months | 0 | 0
12 Months or Greater | (20,324) | (27,051)
Total | $ (20,324) | $ (27,051)

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