Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Securities (Tables)

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Note 4 - Securities (Tables)
6 Months Ended
Jun. 30, 2024
Notes Tables  
Unrealized Gain (Loss) on Investments [Table Text Block]
           

Gross

   

Gross

         
   

Amortized

   

Unrealized

   

Unrealized

   

Fair

 
   

Cost

   

Gain

   

Loss

   

Value

 

June 30, 2024

 

(In Thousands)

 

Debt Securities Available-for-Sale

                               

U.S. Treasury Securities

  $ 609,123     $ 38     $ (340 )   $ 608,821  

Mortgage-backed securities

    268,557       1       (27,195 )     241,363  

State and municipal securities

    11,140       1       (1,162 )     9,979  

Corporate debt

    350,692       -       (36,469 )     314,223  

Total

  $ 1,239,512     $ 40     $ (65,166 )   $ 1,174,386  

Debt Securities Held-to-Maturity

                               

U.S. Treasury Securities

  $ 274,270     $ -     $ (23,932 )   $ 250,338  

Mortgage-backed securities

    484,911       18       (58,379 )     426,550  

State and municipal securities

    8,074       -       (728 )     7,346  

Total

  $ 767,255     $ 18     $ (83,039 )   $ 684,234  
                                 

December 31, 2023

                               

Debt Securities Available-for-Sale

                               

U.S. Treasury Securities

  $ 340,556     $ 251     $ -     $ 340,807  

Mortgage-backed securities

    241,458       6       (25,979 )     215,485  

State and municipal securities

    11,400       1       (1,178 )     10,223  

Corporate debt

    375,676       -       (42,009 )     333,667  

Total

  $ 969,090     $ 258     $ (69,166 )   $ 900,183  

Debt Securities Held-to-Maturity

                               

U.S. Treasury Securities

  $ 508,985     $ -     $ (24,718 )   $ 484,267  

Mortgage-backed securities

    465,615       3       (50,025 )     415,593  

State and municipal securities

    8,063       -       (732 )     7,331  

Total

  $ 982,664     $ 3     $ (75,475 )   $ 907,191  
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
   

June 30, 2024

   

December 31, 2023

 
   

Amortized Cost

   

Fair Value

   

Amortized Cost

   

Fair Value

 
   

(In Thousands)

 

Debt securities available-for-sale

                               

Due within one year

  $ 566,771     $ 566,467     $ 350,400     $ 350,396  

Due from one to five years

    116,025       111,359       70,016       67,334  

Due from five to ten years

    285,159       252,915       304,216       264,893  

Due after ten years

    3,000       2,282       3,000       2,076  

Mortgage-backed securities

    268,557       241,363       241,458       215,485  
    $ 1,239,512     $ 1,174,386     $ 969,090     $ 900,183  
                                 

Debt securities held-to-maturity

                               

Due within one year

  $ 25,225     $ 25,176     $ 260,047     $ 257,835  

Due from one to five years

    253,830       229,634       203,481       185,741  

Due from five to ten years

    3,289       2,874       53,521       48,022  

Mortgage-backed securities

    484,911       426,550       465,615       415,593  
    $ 767,255     $ 684,234     $ 982,664     $ 907,191  
Gain (Loss) on Securities [Table Text Block]
   

Less Than Twelve Months

   

Twelve Months or More

   

Total

 
   

Gross

           

Gross

           

Gross

         
   

Unrealized

           

Unrealized

           

Unrealized

         
   

Losses

   

Fair Value

   

Losses

   

Fair Value

   

Losses

   

Fair Value

 
   

(In Thousands)

 

June 30, 2024

                                               

Debt Securities available-for-sale

                                               

U.S. Treasury Securities

  $ (340 )   $ 164,413     $ -     $ -     $ (340 )   $ 164,413  

Mortgage-backed securities

    (87 )     46,401       (27,108 )     194,850       (27,195 )     241,251  

State and municipal securities

    -       -       (1,162 )     9,533       (1,162 )     9,533  

Corporate debt

    (2,634 )     20,786       (33,836 )     293,437       (36,469 )     314,223  

Total

  $ (3,061 )   $ 231,600     $ (62,106 )   $ 497,820     $ (65,166 )   $ 729,420  

Debt Securities held-to-maturity

                                               

U.S. Treasury Securities

  $ -     $ -     $ (23,932 )   $ 250,340     $ (23,932 )   $ 250,339  

Mortgage-backed securities

    (564 )     41,186       (57,815 )     378,928       (58,379 )     420,114  

State and municipal securities

    -       -       (728 )     7,096       (728 )     7,096  

Total

  $ (564 )   $ 41,186     $ (82,475 )   $ 636,364     $ (83,039 )   $ 677,549  
                                                 

December 31, 2023

                                               

Debt Securities available-for-sale

                                               

U.S. Treasury Securities

  $ -     $ -     $ -     $ -     $ -     $ -  

Government Agency Securities

    -       -       -       -       -       -  

Mortgage-backed securities

    (6 )     704       (25,973 )     214,393       (25,979 )     215,097  

State and municipal securities

    -       -       (1,178 )     9,777       (1,178 )     9,777  

Corporate debt

    (794 )     15,141       (41,214 )     311,666       (42,009 )     326,807  

Total

  $ (801 )   $ 15,845     $ (68,365 )   $ 535,836     $ (69,166 )   $ 551,681  

Debt Securities held-to-maturity

                                               

U.S. Treasury Securities

  $ -     $ -     $ (24,718 )   $ 484,267     $ (24,718 )   $ 484,267  

Mortgage-backed securities

    (1 )     430       (50,024 )     411,585       (50,025 )     412,015  

State and municipal securities

    -       -       (732 )     7,081       (732 )     7,081  

Total

  $ (1 )   $ 430     $ (75,474 )   $ 902,933     $ (75,475 )   $ 903,363