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Note 15 - Commitments (Details) - Outstanding Commitments and Contingent Liabilities - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Note 15 - Commitments (Details) - Outstanding Commitments and Contingent Liabilities [Line Items]    
Commitments $ 116,538 $ 102,461
Financial Standby Letter of Credit [Member]    
Note 15 - Commitments (Details) - Outstanding Commitments and Contingent Liabilities [Line Items]    
Commitments 4,404 4,514
Commitments to Extend Credit [Member]    
Note 15 - Commitments (Details) - Outstanding Commitments and Contingent Liabilities [Line Items]    
Commitments $ 112,134 $ 97,947