Note 5 - Loans (Details) (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	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	$ 47,400,000
Collateral Dependent Impaired Loans, Measured By Third Party Appraisals, Percentage	76.20%
Collateral Dependent Impaired Loans, Measured Internally	14,800,000
Collateral Dependent Impaired Loans, Measured Internally, Percentage	23.80%
Financing Receivable Modifications Number of Contracts Transferred to Non Accrual	1	0
Financing Receivable Modifications Recorded Investment Transferred to Non-Accrual	200,000	0
Impaired Financing Receivable, Recorded Investment	99,602,000		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	2
Financing Receivable Modifications Recorded Investment Transferred to Non-Accrual	2,400,000
Loans Held For Sale [Member] | Substandard [Member]
Note 5 - Loans (Details) [Line Items]
Impaired Financing Receivable, Recorded Investment			400,000
Substandard [Member]
Note 5 - Loans (Details) [Line Items]
Impaired Financing Receivable, Recorded Investment	64,787,000		73,342,000
Extension Of Credit [Member]
Note 5 - Loans (Details) [Line Items]
Commitments and Contingencies	102,000,000
Extension Of Lines Of Credit [Member]
Note 5 - Loans (Details) [Line Items]
Commitments and Contingencies	$ 168,600,000