Note 14 - Fair Value Measurements and Fair Values of Financial Instruments (Details) - Quantitative Information About Level 3 Assets (Market Approach Valuation Technique [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013
Impaired Loans [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Appraised value range	0.00%	[1]	0.00%	[1]
Appraised value weighted average	0.00%	[1]	0.00%	[1]
Impaired Loans [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Appraised value range	89.00%	[1]	40.00%	[1]
Appraised value weighted average	(89.00%)	[1]	(40.00%)	[1]
Impaired Loans [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Appraised value range	30.00%	[1]	23.00%	[1]
Appraised value weighted average	(30.00%)	[1]	(23.00%)	[1]
Impaired Loans [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value (in Dollars)	15,838		17,474
Valuation technique	Fair Value of Collateral (1)	[2]	Fair Value of Collateral (1)	[2]
Unobservable input	Appraised Value (2)	[3]	Appraised Value (2)	[3]
Other Real Estate Owned [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Appraised value range	7.00%	[1]	4.00%	[1]
Appraised value weighted average	(7.00%)	[1]	(4.00%)	[1]
Other Real Estate Owned [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Appraised value range	39.00%	[1]	77.00%	[1]
Appraised value weighted average	(39.00%)	[1]	(77.00%)	[1]
Other Real Estate Owned [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Appraised value range	22.00%	[1]	17.00%	[1]
Appraised value weighted average	(22.00%)	[1]	(17.00%)	[1]
Other Real Estate Owned [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value (in Dollars)	2,135		3,921
Valuation technique	Fair Value of Collateral (1)	[2]	Fair Value of Collateral (1)	[2]
Unobservable input	Appraised Value (2) Sales Price	[3]	Appraised Value (2) Sales Price	[3]
SBA Servicing Assets [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value (in Dollars)	4,099		3,477
Valuation technique	Fair Value		Fair Value
Unobservable input	Individual Loan Valuation (3)	[4]	Individual Loan Valuation (3)	[4]

[1] The range and weighted average of qualitative factors such as economic conditions and estimated liquidation expenses are presented as a percent of the appraised value.

[2] Fair value is generally determined through independent appraisals of the underlying collateral, which include Level 3 inputs that are not identifiable.

[3] Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses.

[4] There is a lack of transactional data in this market place for the non-guaranteed portion of SBA loans.