v3.26.3
Note 5 - Deposits - Summary of Deposits (Details) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Noninterest-bearing $ 1,446,357 $ 1,339,666
Noninterest-bearing demand, percentage 25.80% 25.40%
Noninterest-bearing demand, percent increase (decrease) 8.00%  
Interest-bearing checking $ 1,134,807 $ 957,598
Interest-bearing checking, percentage 20.20% 18.10%
Interest-bearing checking, percent increase (decrease) 18.50%  
Money market $ 1,900,363 $ 1,697,604
Money market, percentage 33.90% 32.10%
Money market, percent increase (decrease) 11.90%  
Savings $ 325,313 $ 310,227
Savings, percentage 5.80% 5.90%
Savings, percent increase (decrease) 4.90%  
Time Deposits $ 785,350 $ 848,844
Time Deposits, percentage 13.90% 16.10%
Time Deposits, percent increase (decrease) (7.50%)  
Total local deposits $ 5,592,190 $ 5,153,939
Total local deposits, percentage 99.60% 97.60%
Total local deposits 8.50%  
Out-of-area time, $100,000 and over $ 20,086 $ 130,513
Out-of-area time, $100,000 and over, percentage 0.40% 2.40%
Out-of-area time, $100,000 and over, percent increase (decrease) (84.60%)  
Total deposits $ 5,612,276 $ 5,284,452
Total deposits, percentage 100.00% 100.00%
Total deposits, percent increase (decrease) 6.20%