Note 8 - Fair Value Measurements (Details) - Level 3 Fair Value Measurements (Discounted Appraised Value [Member])	3 Months Ended
	Mar. 31, 2014
Impaired loans [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Valuation technique	Discounted appraised value
Other real estate owned	Discounted appraised value
Other real estate owned	Discounted appraised value
Other Real Estate Owned [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Valuation technique	Discounted appraised value
Other real estate owned	Discounted appraised value
Other real estate owned	Discounted appraised value
Minimum [Member] | Impaired loans [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Unobservable input	0.00%	[1]
Unobservable input weighted average	0.00%	[1]
Minimum [Member] | Other Real Estate Owned [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Unobservable input	0.00%	[2]
Other real estate owned	0.00%
Other real estate owned	0.00%
Unobservable input weighted average	0.00%	[2]
Other real estate owned	0.00%
Other real estate owned	0.00%
Maximum [Member] | Impaired loans [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Unobservable input	10.00%
Unobservable input weighted average	(10.00%)
Maximum [Member] | Other Real Estate Owned [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Unobservable input	10.00%
Other real estate owned	46.92%
Other real estate owned	(46.92%)
Unobservable input weighted average	(10.00%)
Other real estate owned	46.92%
Other real estate owned	(46.92%)
Weighted Average [Member] | Impaired loans [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Unobservable input	0.67%
Unobservable input weighted average	(0.67%)
Weighted Average [Member] | Other Real Estate Owned [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Unobservable input	5.50%
Other real estate owned	11.96%
Other real estate owned	(11.96%)
Unobservable input weighted average	(5.50%)
Other real estate owned	11.96%
Other real estate owned	(11.96%)

[1] The collateral method of fair value measurement incorporates a discount for selling costs if collection of the loan is expected to come from sale of the collateral. Fair value measurement using the collateral method for a loan that is dependent on the operation, but not the sale, of collateral for collection is not discounted for selling costs.

[2] The Company markets other real estate owned both independently and with local realtors. Properties marketed by realtors are discounted by selling costs. Properties that the Company markets independently are not discounted by selling costs.