Note 10 - Fair Value Measurements (Details) - Fair Value Quantitative Information (Fair Value, Inputs, Level 3 [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Discounted Appraised Value [Member] | Impaired Loans [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Selling cost	6.00%	10.00%
Selling cost, weighted average	(6.00%)	(10.00%)
Discount for lack of marketability and age of appraisal	94.00%	32.00%
Discount for lack of marketability and age of appraisal, weighted average	(94.00%)	(32.00%)
Discounted Appraised Value [Member] | Impaired Loans [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Selling cost	6.00%	10.00%
Selling cost, weighted average	(6.00%)	(10.00%)
Discount for lack of marketability and age of appraisal	94.00%	32.00%
Discount for lack of marketability and age of appraisal, weighted average	(94.00%)	(32.00%)
Discounted Appraised Value [Member] | Impaired Loans [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Selling cost	6.00%	10.00%
Selling cost, weighted average	(6.00%)	(10.00%)
Discount for lack of marketability and age of appraisal	94.00%	32.00%
Discount for lack of marketability and age of appraisal, weighted average	(94.00%)	(32.00%)
Discounted Appraised Value [Member] | Impaired Loans [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value (in Dollars)		306
Fair value (in Dollars)		306
Discounted Appraised Value [Member] | Other Real Estate Owned [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Selling cost	6.00%	0.00%
Selling cost, weighted average	(6.00%)	0.00%
Discount for lack of marketability and age of appraisal	4.00%	0.00%
Discount for lack of marketability and age of appraisal, weighted average	(4.00%)	0.00%
Discounted Appraised Value [Member] | Other Real Estate Owned [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Selling cost	6.00%	6.00%
Selling cost, weighted average	(6.00%)	(6.00%)
Discount for lack of marketability and age of appraisal	4.00%	25.00%
Discount for lack of marketability and age of appraisal, weighted average	(4.00%)	(25.00%)
Discounted Appraised Value [Member] | Other Real Estate Owned [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Selling cost	6.00%	5.00%
Selling cost, weighted average	(6.00%)	(5.00%)
Discount for lack of marketability and age of appraisal	4.00%	9.00%
Discount for lack of marketability and age of appraisal, weighted average	(4.00%)	(9.00%)
Discounted Appraised Value [Member] | Other Real Estate Owned [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value (in Dollars)	1,458	1,458
Fair value (in Dollars)	1,458	1,458
Internal Evaluations [Member] | Other Real Estate Owned [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Internal evaluations	0.00%	10.00%
Internal evaluations, weighted average	0.00%	(10.00%)
Internal Evaluations [Member] | Other Real Estate Owned [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Internal evaluations	33.00%	10.00%
Internal evaluations, weighted average	(33.00%)	(10.00%)
Internal Evaluations [Member] | Other Real Estate Owned [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Internal evaluations	11.00%	10.00%
Internal evaluations, weighted average	(11.00%)	(10.00%)
Internal Evaluations [Member] | Other Real Estate Owned [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value (in Dollars)	2,273	2,940
Fair value (in Dollars)	2,273	2,940