Note 5 - Loans (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Note 5 - Loans (Details) [Line Items]
Fair Value of Collateral Dependent Loans as a Percentage of Appraised or Estimated Value of Collateral	85.00%
Collateral Dependent Impaired Loans, Measured By Third Party Appraisals	$ 35,900,000
Collateral Dependent Impaired Loans, Measured By Third Party Appraisals, Percentage	70.80%
Collateral Dependent Impaired Loans, Measured Internally	14,800,000
Collateral Dependent Impaired Loans, Measured Internally, Percentage	29.20%
Financing Receivable Modification, Number Of Contracts, Paid In Full	2
Impaired Financing Receivable, Recorded Investment	79,224,000	116,045,000
Commitments and Contingencies
Paid in Full During Quarter End [Member]
Note 5 - Loans (Details) [Line Items]
Financing Receivable Modifications Number of Contracts Transferred to Non Accrual	3
Financing Receivable Modifications Recorded Investment Transferred to Non-Accrual	2,700,000
Loans Held For Sale [Member] | Substandard [Member]
Note 5 - Loans (Details) [Line Items]
Impaired Financing Receivable, Recorded Investment		400,000
Extension Of Credit [Member]
Note 5 - Loans (Details) [Line Items]
Commitments and Contingencies	94,200,000
Extension Of Lines Of Credit [Member]
Note 5 - Loans (Details) [Line Items]
Commitments and Contingencies	180,100,000
Substandard [Member]
Note 5 - Loans (Details) [Line Items]
Impaired Financing Receivable, Recorded Investment	$ 51,223,000	$ 73,342,000