Note 9 - Fair Value Measurements and Disclosures (Details) - Quantitative Information about Assets Measured at Fair Value - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value (in Dollars)	$ 859	$ 3,827
Impaired Loans [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value (in Dollars)	749	3,715
Mortgage Servicing Rights [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value (in Dollars)	60	112
Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value (in Dollars)	809	3,827
Fair Value, Inputs, Level 3 [Member] | Impaired Loans [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value (in Dollars)	749	3,715
Fair Value, Inputs, Level 3 [Member] | Mortgage Servicing Rights [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value (in Dollars)	60	112
Fair Value, Inputs, Level 3 [Member] | Income Approach Valuation Technique [Member] | Impaired Loans [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value (in Dollars)	$ 638	$ 953
Liquidation expenses	10.00%	10.00%
Fair Value, Inputs, Level 3 [Member] | Market Approach Valuation Technique [Member] | Impaired Loans [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value (in Dollars)	$ 111	$ 112
Discount rate	6.375%	6.375%
Fair Value, Inputs, Level 3 [Member] | Market Approach Valuation Technique [Member] | Mortgage Servicing Rights [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value (in Dollars)	$ 60	$ 112
Fair Value, Inputs, Level 3 [Member] | Agreement of Sale [Member] | Impaired Loans [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value (in Dollars)		$ 2,650
Fair Value, Inputs, Level 3 [Member] | Minimum [Member] | Income Approach Valuation Technique [Member] | Impaired Loans [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Appraisal adjustments	20.00%	20.00%
Fair Value, Inputs, Level 3 [Member] | Minimum [Member] | Market Approach Valuation Technique [Member] | Mortgage Servicing Rights [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate	10.00%	10.00%
Remaining term	2 years	2 years
Fair Value, Inputs, Level 3 [Member] | Maximum [Member] | Income Approach Valuation Technique [Member] | Impaired Loans [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Appraisal adjustments	100.00%	100.00%
Fair Value, Inputs, Level 3 [Member] | Maximum [Member] | Market Approach Valuation Technique [Member] | Mortgage Servicing Rights [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate	12.00%	12.00%
Remaining term	28 years	28 years