Note 11 - Disclosures about Fair Value of Assets and Liabilities (Details) - Fair Value of Assets Measured on Non-recurring Basis - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Impaired Loans [Member]
Note 11 - Disclosures about Fair Value of Assets and Liabilities (Details) - Fair Value of Assets Measured on Non-recurring Basis [Line Items]
Assets measured at fair value on a nonrecurring basis	$ 12,923	$ 4,076
Foreclosed Assets Held-for-sale [Member]
Note 11 - Disclosures about Fair Value of Assets and Liabilities (Details) - Fair Value of Assets Measured on Non-recurring Basis [Line Items]
Assets measured at fair value on a nonrecurring basis		354
Fair Value, Inputs, Level 3 [Member] | Impaired Loans [Member]
Note 11 - Disclosures about Fair Value of Assets and Liabilities (Details) - Fair Value of Assets Measured on Non-recurring Basis [Line Items]
Assets measured at fair value on a nonrecurring basis	$ 12,923	4,076
Fair Value, Inputs, Level 3 [Member] | Foreclosed Assets Held-for-sale [Member]
Note 11 - Disclosures about Fair Value of Assets and Liabilities (Details) - Fair Value of Assets Measured on Non-recurring Basis [Line Items]
Assets measured at fair value on a nonrecurring basis		$ 354