Note 15 - Fair Values (Details) (USD $)	3 Months Ended		12 Months Ended	3 Months Ended		12 Months Ended	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013 Obligations Of States And Political Subdivisions [Member] Fair Value, Inputs, Level 2 [Member]	Dec. 31, 2012 Obligations Of States And Political Subdivisions [Member] Fair Value, Inputs, Level 2 [Member]	Mar. 31, 2013 Obligations Of States And Political Subdivisions [Member]	Mar. 31, 2013 Non Agency Mortgage Backed Securities [Member] Fair Value, Inputs, Level 2 [Member]	Dec. 31, 2012 Non Agency Mortgage Backed Securities [Member] Fair Value, Inputs, Level 2 [Member]	Mar. 31, 2014 Collateral Impaired Loans [Member]	Mar. 31, 2014 Other Real Estate Owned [Member]
Note 15 - Fair Values (Details) [Line Items]
Fair Value Inputs, Discount Rate	10.00%
Future Cash Flows Discounted	5.93%
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3			$ 1,100,000	$ 0		$ 13,700,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3		1,100,000		1,131,000	13,000,000
Collateral Dependent Impaired Loans Carrying Amount							19,900,000	750,000
Fair Value Written Down							15,300,000	460,000
Allowance for Loan and Lease Losses, Adjustments, Net							4,600,000
Impairment of Real Estate	290,000							290,000
Carrying Value Of Loans Fully Charged Off	$ 0