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Note 7 - Deposits (Tables) | 12 Months Ended
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Dec. 31, 2022
Notes Tables |
Summary of Deposits and Percentage Change in Deposits [Table Text Block] |
|  | December 31, 2022 |  |  | December 31, 2021 |  |  | Percent Increase |
|  | Balance |  |  | % |  |  | Balance |  |  | % |  |  | (Decrease) |
Noninterest-bearing checking |  | $ | 1,604,750,000 |  |  |  | 43.2 | % |  | $ | 1,677,952,000 |  |  |  | 41.1 | % |  |  | (4.4 | %)
Interest-bearing checking |  |  | 575,028,000 |  |  |  | 15.5 |  |  |  | 538,838,000 |  |  |  | 13.2 |  |  |  | 6.7 |
Money market |  |  | 776,723,000 |  |  |  | 20.9 |  |  |  | 1,040,176,000 |  |  |  | 25.5 |  |  |  | (25.3 | )
Savings |  |  | 381,602,000 |  |  |  | 10.3 |  |  |  | 394,330,000 |  |  |  | 9.7 |  |  |  | (3.2 | )
Time, under $100,000 |  |  | 113,099,000 |  |  |  | 3.0 |  |  |  | 132,776,000 |  |  |  | 3.2 |  |  |  | (14.8 | )
Time, $100,000 and over |  |  | 261,609,000 |  |  |  | 7.1 |  |  |  | 275,208,000 |  |  |  | 6.7 |  |  |  | (4.9 | )
Total local deposits |  |  | 3,712,811,000 |  |  |  | 100.0 |  |  |  | 4,059,280,000 |  |  |  | 99.4 |  |  |  | (8.5 | )
Out-of-area time, $100,000 and over |  |  | 0 |  |  |  | 0.0 |  |  |  | 23,913,000 |  |  |  | 0.6 |  |  |  | (100.0 | )
Total deposits |  | $ | 3,712,811,000 |  |  |  | 100.0 | % |  | $ | 4,083,193,000 |  |  |  | 100.0 | % |  |  | (9.1 | %)
Contractual Maturities of Certificates of Deposits [Table Text Block] |
|  | 2022 |  |  | 2021 |
In one year or less |  | $ | 188,887,000 |  |  | $ | 260,501,000 |
In one to two years |  |  | 68,434,000 |  |  |  | 78,024,000 |
In two to three years |  |  | 22,053,000 |  |  |  | 34,595,000 |
In three to four years |  |  | 30,761,000 |  |  |  | 7,863,000 |
In four to five years |  |  | 64,573,000 |  |  |  | 50,914,000 |
Total certificates of deposit |  | $ | 374,708,000 |  |  | $ | 431,897,000 |
Contractual Maturities of Certificates of Deposits of More than Specified Amount [Table Text Block] |
|  | 2022 |  |  | 2021 |
Up to three months |  | $ | 40,538,000 |  |  | $ | 68,887,000 |
Three months to six months |  |  | 25,141,000 |  |  |  | 53,077,000 |
Six months to twelve months |  |  | 54,394,000 |  |  |  | 56,612,000 |
Over twelve months |  |  | 141,536,000 |  |  |  | 120,545,000 |
Total certificates of deposit |  | $ | 261,609,000 |  |  | $ | 299,121,000 |

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