Note 2 - Fair Value of Financial Instruments (Details) - Level 3 Fair Value Measurements (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Nonowner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member] | Impaired Loans [Member] | Minimum [Member]
Commercial real estate:
Unobservable Inputs		5.00%
Nonowner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member] | Impaired Loans [Member] | Maximum [Member]
Commercial real estate:
Unobservable Inputs		10.00%
Nonowner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member] | Impaired Loans [Member] | Weighted Average [Member]
Commercial real estate:
Unobservable Inputs	6.50%	8.00%
Nonowner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member] | Impaired Loans [Member]
Commercial real estate:
Fair Value (in Dollars)	$ 2,625	$ 1,973
Valuation Techniques	Income approach	Sales approach
Unobservable Inputs	6.50%
Commercial and Industrial [Member] | Impaired Loans [Member] | Minimum [Member]
Commercial real estate:
Unobservable Inputs	10.00%
Commercial and Industrial [Member] | Impaired Loans [Member] | Maximum [Member]
Commercial real estate:
Unobservable Inputs	30.00%
Commercial and Industrial [Member] | Impaired Loans [Member] | Weighted Average [Member]
Commercial real estate:
Unobservable Inputs	20.25%
Commercial and Industrial [Member] | Impaired Loans [Member]
Commercial real estate:
Fair Value (in Dollars)	2,491
Valuation Techniques	Sales approach
Commercial and Industrial [Member] | Other Real Estate Owned [Member] | Minimum [Member]
Commercial real estate:
Unobservable Inputs		0.00%
Commercial and Industrial [Member] | Other Real Estate Owned [Member] | Maximum [Member]
Commercial real estate:
Unobservable Inputs		20.00%
Commercial and Industrial [Member] | Other Real Estate Owned [Member] | Weighted Average [Member]
Commercial real estate:
Unobservable Inputs		16.00%
Commercial and Industrial [Member] | Other Real Estate Owned [Member]
Commercial real estate:
Fair Value (in Dollars)		2,863
Valuation Techniques		Sales approach
Commercial Real Estate Construction Financing Receivable [Member] | Other Real Estate Owned [Member] | Minimum [Member]
Commercial real estate:
Unobservable Inputs	5.00%	5.00%
Commercial Real Estate Construction Financing Receivable [Member] | Other Real Estate Owned [Member] | Maximum [Member]
Commercial real estate:
Unobservable Inputs	35.00%	35.00%
Commercial Real Estate Construction Financing Receivable [Member] | Other Real Estate Owned [Member] | Weighted Average [Member]
Commercial real estate:
Unobservable Inputs	19.00%	19.00%
Commercial Real Estate Construction Financing Receivable [Member] | Other Real Estate Owned [Member]
Commercial real estate:
Fair Value (in Dollars)	$ 1,058	$ 1,058
Valuation Techniques	Sales approach	Sales approach