Note 2 - Fair Value of Financial Instruments (Details) - Level 3 Fair Value Measurements (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Commercial Real Estate Portfolio Segment [Member] | Nonowner Occupied [Member] | Impaired Loans [Member]
Commercial real estate:
Fair Value (in Dollars)	$ 1,970	$ 1,973
Valuation Techniques	Sales approach	Sales approach
Unobservable Inputs	Adjustment to comparables	Adjustment to comparables
Weighted Average	8.00%	8.00%
Commercial Real Estate Portfolio Segment [Member] | Nonowner Occupied [Member] | Minimum [Member] | Impaired Loans [Member]
Commercial real estate:
Range	5.00%	5.00%
Commercial Real Estate Portfolio Segment [Member] | Nonowner Occupied [Member] | Maximum [Member] | Impaired Loans [Member]
Commercial real estate:
Range	10.00%	10.00%
Commercial and Industrial [Member] | Impaired Loans [Member]
Commercial real estate:
Fair Value (in Dollars)	2,809
Valuation Techniques	Sales approach
Unobservable Inputs	Adjustment to comparables
Weighted Average	16.00%
Commercial and Industrial [Member] | Other Real Estate Owned [Member]
Commercial real estate:
Fair Value (in Dollars)		2,863
Valuation Techniques		Sales approach
Unobservable Inputs		Adjustment to comparables
Weighted Average		16.00%
Commercial and Industrial [Member] | Minimum [Member] | Impaired Loans [Member]
Commercial real estate:
Range	0.00%
Commercial and Industrial [Member] | Minimum [Member] | Other Real Estate Owned [Member]
Commercial real estate:
Range		0.00%
Commercial and Industrial [Member] | Maximum [Member] | Impaired Loans [Member]
Commercial real estate:
Range	20.00%
Commercial and Industrial [Member] | Maximum [Member] | Other Real Estate Owned [Member]
Commercial real estate:
Range		20.00%
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
Unobservable Inputs	Adjustment to comparables	Adjustment to comparables
Weighted Average	19.00%	19.00%
Commercial Real Estate Construction Financing Receivable [Member] | Minimum [Member] | Other Real Estate Owned [Member]
Commercial real estate:
Range	5.00%	5.00%
Commercial Real Estate Construction Financing Receivable [Member] | Maximum [Member] | Other Real Estate Owned [Member]
Commercial real estate:
Range	35.00%	35.00%