Note 8 - Disclosures about Fair Value of Assets and Liabilities (Details) - Fair Value of Assets Measured on Non-Recurring Basis (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Impaired Loans [Member] | Fair Value, Inputs, Level 3 [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	$ 4,305	$ 4,076
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	4,305	4,076
Foreclosed Assets Held-for-sale [Member] | Fair Value, Inputs, Level 3 [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		354
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		$ 354