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Note 6 - Deposits (Tables) | 9 Months Ended
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Sep. 30, 2018
Notes Tables |
Deposit Liabilities, Type [Table Text Block] |
|  | Nine Months Ended |  |  | Twelve Months Ended |
|  | September 30, 2018 |  |  | December 31, 2017 |
Interest-Bearing Demand |  | $ | 438,241 |  |  | $ | 458,717 |
Savings |  |  | 78,532 |  |  |  | 78,172 |
Time, $250,000 and Over |  |  | 39,487 |  |  |  | 38,920 |
Other Time |  |  | 277,538 |  |  |  | 301,248 |
|  | $ | 833,798 |  |  | $ | 877,057 |
Scheduled Maturities Of Certificates Of Deposits [Table Text Block] |
Maturity |  | September 30, 2018 |  |  | December 31, 2017 |
One Year and Under |  | $ | 207,262 |  |  | $ | 255,575 |
One to Three Years |  |  | 89,495 |  |  |  | 63,327 |
Three Years and Over |  |  | 20,268 |  |  |  | 21,266 |
|  | $ | 317,025 |  |  | $ | 340,168 |

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