Investments (Tables)
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9 Months Ended |
Sep. 30, 2026 |
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| Investments [Abstract] |
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| Debt Securities, Available-for-sale |
The aggregate carrying and approximate fair values of investment securities follow (in thousands). Fair values are based on quoted market prices, where available. If quoted market prices are not available, fair values are based on quoted market prices of comparable financial instruments.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | September 30, 2026 | December 31, 2025 | | Amortized Cost | Gross Unrealized Gains | Gross Unrealized Losses | Estimated Fair Value | Amortized Cost | Gross Unrealized Gains | Gross Unrealized Losses | Estimated Fair Value | | Securities available-for-sale: | | | | | | | | | | Obligations of states and | | | | | | | | | | political subdivisions | $ | 183,806 | | $ | 12 | | $ | 21,818 | | $ | 162,000 | | $ | 189,276 | | $ | 538 | | $ | 10,090 | | $ | 179,724 | | | Mortgage-backed securities: | | | | | | | | | | U.S. government agencies | 1,421,050 | | 32 | | 149,066 | | 1,272,016 | | 1,387,057 | | 7,836 | | 97,104 | | 1,297,789 | | | Private label | 5,052 | | — | | 92 | | 4,960 | | 5,068 | | — | | 36 | | 5,032 | | | Trust preferred securities | 4,619 | | — | | 91 | | 4,528 | | 4,612 | | — | | 188 | | 4,424 | | | Corporate securities | 16,591 | | 222 | | 694 | | 16,119 | | 16,708 | | 172 | | 491 | | 16,389 | | | Total Securities Available-for-Sale | $ | 1,631,118 | | $ | 266 | | $ | 171,761 | | $ | 1,459,623 | | $ | 1,602,721 | | $ | 8,546 | | $ | 107,909 | | $ | 1,503,358 | |
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| Gross Unrealized Losses And Fair Value Of Investments |
The following table shows the gross unrealized losses and fair value of the Company’s investments aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position (in thousands): | | | | | | | | | | | | | | | | | | | | | | September 30, 2026 | | Less Than Twelve Months | Twelve Months or Greater | Total | | Estimated Fair Value | Unrealized Loss | Estimated Fair Value | Unrealized Loss | Estimated Fair Value | Unrealized Loss | | Securities available-for-sale: | | | | | | | | Obligations of states and political subdivisions | $ | 47,167 | | $ | 4,490 | | $ | 113,973 | | $ | 17,328 | | $ | 161,140 | | $ | 21,818 | | | Mortgage-backed securities: | | | | | | | | U.S. Government agencies | 551,449 | | 20,597 | | 695,628 | | 128,469 | | 1,247,077 | | 149,066 | | | Private label | — | | — | | 4,960 | | 92 | | 4,960 | | 92 | | | Trust preferred securities | — | | — | | 4,528 | | 91 | | 4,528 | | 91 | | | Corporate securities | — | | — | | 14,205 | | 694 | | 14,205 | | 694 | | | Total available-for-sale | $ | 598,616 | | $ | 25,087 | | $ | 833,294 | | $ | 146,674 | | $ | 1,431,910 | | $ | 171,761 | |
| | | | | | | | | | | | | | | | | | | | | | December 31, 2025 | | Less Than Twelve Months | Twelve Months or Greater | Total | | Estimated Fair Value | Unrealized Loss | Estimated Fair Value | Unrealized Loss | Estimated Fair Value | Unrealized Loss | | Securities available-for-sale: | | | | | | | | Obligations of states and political subdivisions | $ | 4,746 | | $ | 29 | | $ | 129,347 | | $ | 10,061 | | $ | 134,093 | | $ | 10,090 | | | Mortgage-backed securities: | | | | | | | | U.S. Government agencies | 48,555 | | 140 | | 803,686 | | 96,964 | | 852,241 | | 97,104 | | | Private label | — | | — | | 5,032 | | 36 | | 5,032 | | 36 | | | Trust preferred securities | 4,424 | | 188 | | — | | — | | 4,424 | | 188 | | | Corporate securities | — | | — | | 14,559 | | 491 | | 14,559 | | 491 | | | Total available-for-sale | $ | 57,725 | | $ | 357 | | $ | 952,624 | | $ | 107,552 | | $ | 1,010,349 | | $ | 107,909 | |
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| Amortized Cost And Estimated Fair Value Of Debt Securities By Contractual Maturity |
The amortized cost and estimated fair value of debt securities at September 30, 2026, by contractual maturity, is shown in the following table (in thousands). Expected maturities will differ from contractual maturities because the issuers of the securities may have the right to prepay obligations without prepayment penalties. Mortgage-backed securities have been allocated to their respective maturity groupings based on their contractual maturity.
| | | | | | | | | | Amortized Cost | Estimated Fair Value | | Available-for-Sale Debt Securities | | | | Due in one year or less | $ | 4,224 | | $ | 4,199 | | | Due after one year through five years | 123,047 | | 116,965 | | | Due after five years through ten years | 305,436 | | 280,387 | | | Due after ten years | 1,198,411 | | 1,058,072 | | | Total | $ | 1,631,118 | | $ | 1,459,623 | |
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| Gross Gains And Losses Realized |
Proceeds from sales, gross gains and gross losses recognized by the Company from investment security transactions are summarized in the table below (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | Three months ended September 30, | | Nine months ended September 30, | | 2026 | 2025 | | 2026 | 2025 | | Proceeds on sales of available for sale securities | $ | — | | $ | 51,918 | | | $ | — | | $ | 66,800 | | | | | | | | | Gross realized gains on available for sale securities sold | $ | — | | $ | 319 | | | $ | — | | $ | 556 | | | Gross realized losses on available for sale securities sold | — | | (282) | | | — | | (369) | | | Net realized available for sale securities gains (losses) | $ | — | | $ | 37 | | | $ | — | | $ | 187 | | | | | | | | | Gross unrealized gains recognized on equity securities still held | $ | 158 | | $ | 96 | | | $ | 230 | | $ | 119 | | | Gross unrealized losses recognized on equity securities still held | (80) | | — | | | (87) | | (291) | | | Net unrealized (losses) gains recognized on equity securities still held | $ | 78 | | $ | 96 | | | $ | 143 | | $ | (172) | |
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