v3.25.2
Investments (Tables)
6 Months Ended
Jun. 30, 2025
Investments [Abstract]  
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.

June 30, 2025December 31, 2024
Amortized CostGross Unrealized GainsGross Unrealized LossesEstimated Fair ValueAmortized CostGross Unrealized GainsGross Unrealized LossesEstimated Fair Value
Securities available-for-sale:        
Obligations of states and     
political subdivisions$181,301 $66 $15,394 $165,973 $199,131 $139 $15,519 $183,751 
Mortgage-backed securities:     
U.S. government agencies1,467,378 4,800 111,216 1,360,962 1,334,755 1,993 134,667 1,202,081 
Private label5,078  105 4,973 5,096 — 163 4,933 
Trust preferred securities4,608  178 4,430 4,605 141 — 4,746 
Corporate securities26,786 84 785 26,085 26,862 144 1,211 25,795 
Total Securities Available-for-Sale$1,685,151 $4,950 $127,678 $1,562,423 $1,570,449 $2,417 $151,560 $1,421,306 
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):
June 30, 2025
Less Than Twelve MonthsTwelve Months or GreaterTotal
Estimated Fair ValueUnrealized LossEstimated Fair ValueUnrealized LossEstimated Fair ValueUnrealized Loss
Securities available-for-sale:      
Obligations of states and political subdivisions$6,350 $126 $149,636 $15,268 $155,986 $15,394 
Mortgage-backed securities:  
U.S. Government agencies54,417 8,663 715,841 102,553 770,258 111,216 
     Private label  4,973 105 4,973 105 
Trust preferred securities 4,430 178   4,430 178 
Corporate securities  24,364 785 24,364 785 
Total available-for-sale$65,197 $8,967 $894,814 $118,711 $960,011 $127,678 
December 31, 2024
Less Than Twelve MonthsTwelve Months or GreaterTotal
Estimated Fair ValueUnrealized LossEstimated Fair ValueUnrealized LossEstimated Fair ValueUnrealized Loss
Securities available-for-sale:      
Obligations of states and political subdivisions$19,724 $422 $151,508 $15,097 $171,232 $15,519 
Mortgage-backed securities:  
U.S. Government agencies114,560 12,669 710,651 121,998 825,211 134,667 
Private label— — 4,933 163 4,933 163 
Trust preferred securities— — — — — — 
Corporate securities— — 24,035 1,211 24,035 1,211 
Total available-for-sale$134,284 $13,091 $891,127 $138,469 $1,025,411 $151,560 
Amortized Cost And Estimated Fair Value Of Debt Securities By Contractual Maturity
The amortized cost and estimated fair value of debt securities at June 30, 2025, 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 CostEstimated Fair Value
Available-for-Sale Debt Securities  
Due in one year or less$16,326 $16,256 
Due after one year through five years146,381 141,565 
Due after five years through ten years296,725 281,560 
Due after ten years1,225,719 1,123,042 
Total$1,685,151 $1,562,423 
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 June 30,
Six months ended June 30,
2025
2024
2025
2024
Proceeds on sales of available for sale securities$14,882 $— $14,882 $— 
Gross realized gains on available for sale securities sold$237 $— $237 $— 
Gross realized losses on available for sale securities sold(87)— (87)(1)
Net realized available for sale securities gains (losses) $150 $— $150 $(1)
Gross unrealized gains recognized on equity securities still held$26 $375 $62 $247 
Gross unrealized losses recognized on equity securities still held(289)(11)(330)(35)
Net unrealized (losses) gains recognized on equity securities still held$(263)$364 $(268)$212