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Note 19 - Related Party Transactions (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Related Party Deposit Liabilities $ 7,130 $ 5,450  
Related Party Transaction, Expenses from Transactions with Related Party 44 104 $ 88
Operating Leases, Rent Expense, Net 582 784 862
Related Parties [Member]      
Operating Leases, Rent Expense, Net 49 95 95
Due to Other Related Parties $ 63 $ 34 $ 21
Stock Repurchased During Period, Shares   200,000  
Stock Repurchased During Period, Value   $ 4,200