v3.26.1
Note 2 - Securities - Securities in a Continuous Loss Position (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Securities available for sale, continuous unrealized loss position, less than 12 months $ 362,248 $ 48,801
Securities available for sale, continuous unrealized loss position, less than 12 months, unrealized loss 5,004 270
Securities available for sale, continuous unrealized loss position, 12 months or more 537,635 496,500
Securities available for sale, continuous unrealized loss position, 12 months or more, unrealized loss 38,499 36,586
Securities available for sale, continuous unrealized loss position 899,883 545,301
Securities available for sale, continuous unrealized loss position, unrealized loss 43,503 36,856
US Treasury Securities [Member]    
Securities available for sale, continuous unrealized loss position, less than 12 months 55,099 0
Securities available for sale, continuous unrealized loss position, less than 12 months, unrealized loss 706 0
Securities available for sale, continuous unrealized loss position, 12 months or more 0 0
Securities available for sale, continuous unrealized loss position, 12 months or more, unrealized loss 0 0
Securities available for sale, continuous unrealized loss position 55,099 0
Securities available for sale, continuous unrealized loss position, unrealized loss 706 0
US Government Agencies Debt Securities [Member]    
Securities available for sale, continuous unrealized loss position, less than 12 months 177,740 41,380
Securities available for sale, continuous unrealized loss position, less than 12 months, unrealized loss 2,269 234
Securities available for sale, continuous unrealized loss position, 12 months or more 394,004 350,926
Securities available for sale, continuous unrealized loss position, 12 months or more, unrealized loss 27,573 26,177
Securities available for sale, continuous unrealized loss position 571,744 392,306
Securities available for sale, continuous unrealized loss position, unrealized loss 29,842 26,411
Collateralized Mortgage-Backed Securities [Member]    
Securities available for sale, continuous unrealized loss position, less than 12 months 46,699 0
Securities available for sale, continuous unrealized loss position, less than 12 months, unrealized loss 1,170 0
Securities available for sale, continuous unrealized loss position, 12 months or more 21,768 22,945
Securities available for sale, continuous unrealized loss position, 12 months or more, unrealized loss 4,896 4,727
Securities available for sale, continuous unrealized loss position 68,467 22,945
Securities available for sale, continuous unrealized loss position, unrealized loss 6,066 4,727
Municipal General Obligation Bonds [Member]    
Securities available for sale, continuous unrealized loss position, less than 12 months 13,879 4,465
Securities available for sale, continuous unrealized loss position, less than 12 months, unrealized loss 185 23
Securities available for sale, continuous unrealized loss position, 12 months or more 99,531 102,736
Securities available for sale, continuous unrealized loss position, 12 months or more, unrealized loss 4,347 4,143
Securities available for sale, continuous unrealized loss position 113,410 107,201
Securities available for sale, continuous unrealized loss position, unrealized loss 4,532 4,166
Municipal Revenue Bonds [Member]    
Securities available for sale, continuous unrealized loss position, less than 12 months 31,407 2,956
Securities available for sale, continuous unrealized loss position, less than 12 months, unrealized loss 411 13
Securities available for sale, continuous unrealized loss position, 12 months or more 22,332 19,893
Securities available for sale, continuous unrealized loss position, 12 months or more, unrealized loss 1,683 1,539
Securities available for sale, continuous unrealized loss position 53,739 22,849
Securities available for sale, continuous unrealized loss position, unrealized loss 2,094 1,552
Other Debt and Equity Securities [Member]    
Securities available for sale, continuous unrealized loss position, less than 12 months 37,424 0
Securities available for sale, continuous unrealized loss position, less than 12 months, unrealized loss 263 0
Securities available for sale, continuous unrealized loss position, 12 months or more 0 0
Securities available for sale, continuous unrealized loss position, 12 months or more, unrealized loss 0 0
Securities available for sale, continuous unrealized loss position 37,424 0
Securities available for sale, continuous unrealized loss position, unrealized loss $ 263 $ 0