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Investment Securities - Summary of Held-to-maturity Securities by Maturities (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
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Schedule of Held-to-maturity Securities [Line Items] |  |
Debt securities, maturing within 1 year, amortized cost | $ 9,063 |
Debt securities, maturing 1 to 5 years, amortized cost | 28,654 |
Debt securities, maturing 5 to 10 years, amortized cost | 127,697 |
Debt securities, maturing over 10 years, amortized cost | 536,808 |
Amortized Cost | 702,222 | $ 683,895
Debt securities, maturing within 1 year, fair value | 9,007 |
Debt securities, maturing 1 to 5 years, fair value | 27,167 |
Debt securities, maturing 5 to 10 years, fair value | 118,247 |
Debt securities, maturing over 10 years, fair value | 468,172 |
Debt securities, held-to-maturity, fair value | $ 622,593 | 612,022
Held-to-maturity securities, maturing within 1 year, weighted average yield | 3.85% |
Held-to-maturity securities, maturing 1 to 5 years, weighted average yield | 2.46% |
Held-to-maturity securities, maturing 6 to 10 years, weighted average yield | 4.00% |
Held-to-maturity securities, maturing over 10 years, weighted average yield | 3.66% |
Held-to-maturity securities, total weighted average yield | 3.67% |
U.S. government sponsored agencies |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Debt securities, maturing within 1 year, amortized cost | $ 8,000 |
Debt securities, maturing 1 to 5 years, amortized cost | 10,634 |
Debt securities, maturing 5 to 10 years, amortized cost | 70,081 |
Debt securities, maturing over 10 years, amortized cost | 123,308 |
Amortized Cost | 212,023 | 188,475
Debt securities, maturing within 1 year, fair value | 7,950 |
Debt securities, maturing 1 to 5 years, fair value | 10,171 |
Debt securities, maturing 5 to 10 years, fair value | 69,459 |
Debt securities, maturing over 10 years, fair value | 115,557 |
Debt securities, held-to-maturity, fair value | 203,137 | 180,825
States and political subdivisions |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Debt securities, maturing within 1 year, amortized cost | 0 |
Debt securities, maturing 1 to 5 years, amortized cost | 6,424 |
Debt securities, maturing 5 to 10 years, amortized cost | 16,631 |
Debt securities, maturing over 10 years, amortized cost | 121,079 |
Amortized Cost | 144,134 | 144,496
Debt securities, maturing within 1 year, fair value | 0 |
Debt securities, maturing 1 to 5 years, fair value | 6,290 |
Debt securities, maturing 5 to 10 years, fair value | 13,874 |
Debt securities, maturing over 10 years, fair value | 91,918 |
Debt securities, held-to-maturity, fair value | 112,082 | 114,288
Residential mortgage-backed securities |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Debt securities, maturing within 1 year, amortized cost | 0 |
Debt securities, maturing 1 to 5 years, amortized cost | 360 |
Debt securities, maturing 5 to 10 years, amortized cost | 4,134 |
Debt securities, maturing over 10 years, amortized cost | 241,789 |
Amortized Cost | 246,283 | 248,559
Debt securities, maturing within 1 year, fair value | 0 |
Debt securities, maturing 1 to 5 years, fair value | 353 |
Debt securities, maturing 5 to 10 years, fair value | 3,595 |
Debt securities, maturing over 10 years, fair value | 220,212 |
Debt securities, held-to-maturity, fair value | 224,160 | 231,620
Commercial mortgage-backed securities |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Debt securities, maturing within 1 year, amortized cost | 1,063 |
Debt securities, maturing 1 to 5 years, amortized cost | 11,236 |
Debt securities, maturing 5 to 10 years, amortized cost | 36,851 |
Debt securities, maturing over 10 years, amortized cost | 50,632 |
Amortized Cost | 99,782 | 102,365
Debt securities, maturing within 1 year, fair value | 1,057 |
Debt securities, maturing 1 to 5 years, fair value | 10,353 |
Debt securities, maturing 5 to 10 years, fair value | 31,319 |
Debt securities, maturing over 10 years, fair value | 40,485 |
Debt securities, held-to-maturity, fair value | $ 83,214 | $ 85,289

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