v3.26.3
Note 9 - Comprehensive Income - Accumulated Other Comprehensive (Loss) Income (Details) - USD ($)
$ in Thousands
Sep. 30, 2026
Jun. 30, 2026
Dec. 31, 2025
Sep. 30, 2025
Jun. 30, 2025
Dec. 31, 2024
Balance $ 1,598,600 $ 1,626,525 $ 1,573,340 $ 1,538,344 $ 1,496,431 $ 1,241,704
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]            
Balance (95,782)   (40,652)      
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]            
Balance 12,072   7,904      
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]            
Balance 852   852      
AOCI Attributable to Parent [Member]            
Balance $ (82,858) $ (34,848) $ (31,896) $ (37,110) $ (47,405) $ (47,846)