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Note 8 - Commitments and Off-balance Sheet Risk (Tables) | 6 Months Ended
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Jun. 30, 2020
Notes Tables |
Summary of Contractual Amounts of Financial Instruments With Off Balance Sheet Risk [Table Text Block] |
|  | June 30, 2020 |  |  | December 31, 2019 |
Commercial unused lines of credit |  | $ | 862,725,000 |  |  | $ | 776,493,000 |
Unused lines of credit secured by 1 – 4 family residential properties |  |  | 60,196,000 |  |  |  | 60,858,000 |
Credit card unused lines of credit |  |  | 63,951,000 |  |  |  | 58,199,000 |
Other consumer unused lines of credit |  |  | 23,080,000 |  |  |  | 18,135,000 |
Commitments to make loans |  |  | 175,951,000 |  |  |  | 101,961,000 |
Standby letters of credit |  |  | 21,427,000 |  |  |  | 22,798,000 |
|  | $ | 1,207,330,000 |  |  | $ | 1,038,444,000 |

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