v3.26.1
INVESTMENTS (Summary of Amortized Costs and Estimated Fair Values of Available-For-Sale Securities) (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Debt Securities, Available-for-sale [Abstract]    
Amortized Cost, Total $ 946,468 $ 972,686
Available-for-sale securities, at fair value (amortized cost of $946,468 and $972,686, respectively) 901,617 930,401
Obligations of states and political subdivisions    
Debt Securities, Available-for-sale [Abstract]    
Amortized Cost, Total 5,303 5,303
Unrealized Gains 1 1
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 50 29
Available-for-sale securities, at fair value (amortized cost of $946,468 and $972,686, respectively) 5,254 5,275
MBS issued or guaranteed by U.S. government-sponsored enterprises    
Debt Securities, Available-for-sale [Abstract]    
Amortized Cost, Total 704,818 720,634
Unrealized Gains 6,053 7,540
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 44,361 43,785
Available-for-sale securities, at fair value (amortized cost of $946,468 and $972,686, respectively) 666,510 684,389
CMO issued or guaranteed by U.S. government-sponsored enterprises    
Debt Securities, Available-for-sale [Abstract]    
Amortized Cost, Total 219,617 230,028
Unrealized Gains 695 1,141
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 6,870 6,796
Available-for-sale securities, at fair value (amortized cost of $946,468 and $972,686, respectively) 213,442 224,373
Subordinated corporate bonds    
Debt Securities, Available-for-sale [Abstract]    
Amortized Cost, Total 16,730 16,721
Unrealized Gains 118 16
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 437 373
Available-for-sale securities, at fair value (amortized cost of $946,468 and $972,686, respectively) 16,411 16,364
Total AFS debt securities    
Debt Securities, Available-for-sale [Abstract]    
Amortized Cost, Total 946,468 972,686
Unrealized Gains 6,867 8,698
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 51,718 50,983
Available-for-sale securities, at fair value (amortized cost of $946,468 and $972,686, respectively) $ 901,617 $ 930,401