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Note 18 - Fair Value of Financial Instruments (Details) - Assets and Liabilities Carried at Fair Value on a Non-Recurring Basis, and the Method Used to Determine Their Fair Value - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Assets:    
Assets $ 20,292 $ 28,500
Impaired Loans [Member]    
Assets:    
Assets 15,360 22,174
Other Real Estate Owned [Member]    
Assets:    
Assets 4,932 6,326
Fair Value, Inputs, Level 3 [Member]    
Assets:    
Assets 20,292 28,500
Fair Value, Inputs, Level 3 [Member] | Impaired Loans [Member]    
Assets:    
Assets 15,360 22,174
Fair Value, Inputs, Level 3 [Member] | Other Real Estate Owned [Member]    
Assets:    
Assets $ 4,932 $ 6,326