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Note 19 - Supplemental Executive Retirement Plan (Details)
$ in Thousands
1 Months Ended 12 Months Ended
Feb. 28, 2013
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Note 19 - Supplemental Executive Retirement Plan (Details) [Line Items]      
Cash Surrender Value of Life Insurance   $ 12,136 $ 11,277
Supplemental Executive Retirement and Death Benefit Agreements [Member]      
Note 19 - Supplemental Executive Retirement Plan (Details) [Line Items]      
Time Period for Calculating Base Salary Under SERP Agreements 5 years    
Retirement Age 67    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 6 years    
Retirement Plan, Monthly Installments 180    
Defined Benefit Plan, Net Periodic Benefit Cost   953 1,900
Purchased Fixed Annuity for Financing Retirement Benefits [Member] | Supplemental Executive Retirement and Death Benefit Agreements [Member]      
Note 19 - Supplemental Executive Retirement Plan (Details) [Line Items]      
Other Investments $ 11,400    
Noninterest Income, Other   84 $ 50
Purchased Fixed Annuity for Financing Retirement Benefits [Member] | Supplemental Executive Retirement and Death Benefit Agreements [Member] | Other Assets [Member]      
Note 19 - Supplemental Executive Retirement Plan (Details) [Line Items]      
Cash Surrender Value of Life Insurance   $ 12,100