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Note 11 - Deposits (Details) - USD ($)
$ in Millions
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Disclosure Text Block [Abstract]      
Related Party Deposit Liabilities $ 57.0 $ 71.0 $ 71.0
Time Deposists, $250,000 or More $ 180.1 $ 138.6