Note 19 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Construction and Land Development OREO [Member] | Fair Value, Inputs, Level 1 [Member]
Note 19 - Fair Value Measurements (Details) - 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 19 - Fair Value Measurements (Details) - 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 19 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Assets fair value, nonrecurring	8,123	14,465
Construction and Land Development OREO [Member]
Note 19 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Assets fair value, nonrecurring	8,123	14,465
Residential Real Estate OREO [Member] | Fair Value, Inputs, Level 1 [Member]
Note 19 - Fair Value Measurements (Details) - 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 19 - Fair Value Measurements (Details) - 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 19 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Assets fair value, nonrecurring	863	1,116
Residential Real Estate OREO [Member]
Note 19 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Assets fair value, nonrecurring	863	1,116
Farmland and Other Commercial Enterprises OREO [Member] | Fair Value, Inputs, Level 1 [Member]
Note 19 - Fair Value Measurements (Details) - 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 19 - Fair Value Measurements (Details) - 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 19 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Assets fair value, nonrecurring	5,459	9,152
Farmland and Other Commercial Enterprises OREO [Member]
Note 19 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Assets fair value, nonrecurring	5,459	9,152
OREO [Member] | Fair Value, Inputs, Level 1 [Member]
Note 19 - Fair Value Measurements (Details) - 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 19 - Fair Value Measurements (Details) - 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 19 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Assets fair value, nonrecurring	14,445	24,733
OREO [Member]
Note 19 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Assets fair value, nonrecurring	14,445	24,733
Real Estate Construction and Land Development [Member] | Fair Value, Inputs, Level 1 [Member] | Impaired Loans [Member]
Note 19 - Fair Value Measurements (Details) - 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 19 - Fair Value Measurements (Details) - 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 19 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Assets fair value, nonrecurring	284	334
Real Estate Construction and Land Development [Member] | Impaired Loans [Member]
Note 19 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Assets fair value, nonrecurring	284	334
Real Estate Mortgage Residential [Member] | Fair Value, Inputs, Level 1 [Member] | Impaired Loans [Member]
Note 19 - Fair Value Measurements (Details) - 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 19 - Fair Value Measurements (Details) - 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 19 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Assets fair value, nonrecurring	946	2,085
Real Estate Mortgage Residential [Member] | Impaired Loans [Member]
Note 19 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Assets fair value, nonrecurring	946	2,085
Real Estate Mortgage Farmland and Other Commercial Enterprises [Member] | Fair Value, Inputs, Level 1 [Member] | Impaired Loans [Member]
Note 19 - Fair Value Measurements (Details) - 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 19 - Fair Value Measurements (Details) - 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 19 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Assets fair value, nonrecurring	340	3,152
Real Estate Mortgage Farmland and Other Commercial Enterprises [Member] | Impaired Loans [Member]
Note 19 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Assets fair value, nonrecurring	340	3,152
Commercial and Industrial [Member] | Fair Value, Inputs, Level 1 [Member] | Impaired Loans [Member]
Note 19 - Fair Value Measurements (Details) - 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 19 - Fair Value Measurements (Details) - 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 19 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Assets fair value, nonrecurring		88
Commercial and Industrial [Member] | Impaired Loans [Member]
Note 19 - Fair Value Measurements (Details) - 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 19 - Fair Value Measurements (Details) - 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 19 - Fair Value Measurements (Details) - 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 19 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Assets fair value, nonrecurring	1,570	5,659
Impaired Loans [Member]
Note 19 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Assets fair value, nonrecurring	$ 1,570	$ 5,659