Note 5 - Loans (Details) (USD $)	6 Months Ended
	Jun. 30, 2013		Dec. 31, 2012
Note 5 - Loans (Details) [Line Items]
FairValueOfCollateralDependentLoansAsAPercentageOfAppraisedOrEstimatedValueOfCollateral	85.00%
Collateral Dependent Impaired Loans, Measured By Third Party Appraisals	$ 78,400,000
Collateral Dependent Impaired Loans, Measured By Third Party Appraisals, Percentage	73.60%
Collateral Dependent Impaired Loans, Measured Internally	28,600,000
Collateral Dependent Impaired Loans, Measured Internally, Percentage	26.40%
Impaired Financing Receivable, Recorded Investment	138,682,000		171,001,000
Loans Held For Sale [Member] | Substandard [Member]
Note 5 - Loans (Details) [Line Items]
Impaired Financing Receivable, Recorded Investment	300,000		5,300,000
Substandard [Member]
Note 5 - Loans (Details) [Line Items]
Impaired Financing Receivable, Recorded Investment	102,749,000	[1]	116,633,000	[1]
Extension Of Credit [Member]
Note 5 - Loans (Details) [Line Items]
Commitments and Contingencies	50,200,000
Extension Of Lines Of Credit [Member]
Note 5 - Loans (Details) [Line Items]
Commitments and Contingencies	$ 227,400,000

[1] The tables above do not include $0.3 million and $5.3 million of Substandard loans held for sale at June 30, 2013 and December 31, 2012, respectively.