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Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Construction and Land Development OREO [Member] | Fair Value, Inputs, Level 1 [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring $ 0 $ 0
Construction and Land Development OREO [Member] | Fair Value, Inputs, Level 2 [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 0 0
Construction and Land Development OREO [Member] | Fair Value, Inputs, Level 3 [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 7,855 14,465
Construction and Land Development OREO [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 7,855 14,465
Residential Real Estate OREO [Member] | Fair Value, Inputs, Level 1 [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 0 0
Residential Real Estate OREO [Member] | Fair Value, Inputs, Level 2 [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 0 0
Residential Real Estate OREO [Member] | Fair Value, Inputs, Level 3 [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 676 1,116
Residential Real Estate OREO [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 676 1,116
Farmland and Other Commercial Enterprises OREO [Member] | Fair Value, Inputs, Level 1 [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 0 0
Farmland and Other Commercial Enterprises OREO [Member] | Fair Value, Inputs, Level 2 [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 0 0
Farmland and Other Commercial Enterprises OREO [Member] | Fair Value, Inputs, Level 3 [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 1,325 9,152
Farmland and Other Commercial Enterprises OREO [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 1,325 9,152
OREO [Member] | Fair Value, Inputs, Level 1 [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 0 0
OREO [Member] | Fair Value, Inputs, Level 2 [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 0 0
OREO [Member] | Fair Value, Inputs, Level 3 [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 9,856 24,733
OREO [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 9,856 24,733
Real Estate Construction And Land Development [Member] | Fair Value, Inputs, Level 1 [Member] | Impaired Loans [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 0 0
Real Estate Construction And Land Development [Member] | Fair Value, Inputs, Level 2 [Member] | Impaired Loans [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 0 0
Real Estate Construction And Land Development [Member] | Fair Value, Inputs, Level 3 [Member] | Impaired Loans [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 283 334
Real Estate Construction And Land Development [Member] | Impaired Loans [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 283 334
Real Estate Mortgage Residential [Member] | Fair Value, Inputs, Level 1 [Member] | Impaired Loans [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 0 0
Real Estate Mortgage Residential [Member] | Fair Value, Inputs, Level 2 [Member] | Impaired Loans [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 0 0
Real Estate Mortgage Residential [Member] | Fair Value, Inputs, Level 3 [Member] | Impaired Loans [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 1,023 2,085
Real Estate Mortgage Residential [Member] | Impaired Loans [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 1,023 2,085
Real Estate Mortgage Farmland And Other Commercial Enterprises [Member] | Fair Value, Inputs, Level 1 [Member] | Impaired Loans [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 0 0
Real Estate Mortgage Farmland And Other Commercial Enterprises [Member] | Fair Value, Inputs, Level 2 [Member] | Impaired Loans [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 0 0
Real Estate Mortgage Farmland And Other Commercial Enterprises [Member] | Fair Value, Inputs, Level 3 [Member] | Impaired Loans [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 380 3,152
Real Estate Mortgage Farmland And Other Commercial Enterprises [Member] | Impaired Loans [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 380 3,152
Commercial And Industrial [Member] | Fair Value, Inputs, Level 1 [Member] | Impaired Loans [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring   0
Commercial And Industrial [Member] | Fair Value, Inputs, Level 2 [Member] | Impaired Loans [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring   0
Commercial And Industrial [Member] | Fair Value, Inputs, Level 3 [Member] | Impaired Loans [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring   88
Commercial And Industrial [Member] | Impaired Loans [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring   88
Fair Value, Inputs, Level 1 [Member] | Impaired Loans [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 0 0
Fair Value, Inputs, Level 2 [Member] | Impaired Loans [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 0 0
Fair Value, Inputs, Level 3 [Member] | Impaired Loans [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring 1,686 5,659
Impaired Loans [Member]
    
Note 11 - Fair Value Measurements (Details) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]    
Assets fair value, nonrecurring $ 1,686 $ 5,659