Note 8 - Disclosures about Fair Value of Assets and Liabilities (Details) - Fair Value of Assets Measured on Non-Recurring Basis - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Impaired Loans [Member]
Note 8 - 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	$ 3,719	$ 4,076
Foreclosed Assets Held-for-sale [Member]
Note 8 - 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	190	354
Fair Value, Inputs, Level 3 [Member] | Impaired Loans [Member]
Note 8 - 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	3,719	4,076
Fair Value, Inputs, Level 3 [Member] | Foreclosed Assets Held-for-sale [Member]
Note 8 - 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	$ 190	$ 354