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Note 7 - Other Real Estate Owned (Details Textual)
3 Months Ended
Mar. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Consumer Portfolio Segment [Member]    
Securities Received as Collateral, Amount Foreclosed $ 0  
Mortgage Loans in Process of Foreclosure, Amount $ 13,500,000 $ 15,200,000
Residential Portfolio Segment [Member] | Real Estate Loan [Member]    
Number of Foreclosed Real Estate Held 2 1
Repossessed Assets $ 600,000 $ 100,000