Note 5 - Loans (Details) (USD $)	9 Months Ended
	Sep. 30, 2013		Dec. 31, 2012
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	$ 75,000,000
Collateral Dependent Impaired Loans, Measured By Third Party Appraisals, Percentage	82.80%
Collateral Dependent Impaired Loans, Measured Internally	15,100,000
Collateral Dependent Impaired Loans, Measured Internally, Percentage	17.20%
Impaired Financing Receivable, Recorded Investment	120,166,000		171,001,000
Loans Held For Sale [Member] | Substandard [Member]
Note 5 - Loans (Details) [Line Items]
Impaired Financing Receivable, Recorded Investment	5,000,000		5,300,000
Substandard [Member]
Note 5 - Loans (Details) [Line Items]
Impaired Financing Receivable, Recorded Investment	80,762,000	[1]	116,633,000	[1]
Extension Of Credit [Member]
Note 5 - Loans (Details) [Line Items]
Commitments and Contingencies	66,800,000
Extension Of Lines Of Credit [Member]
Note 5 - Loans (Details) [Line Items]
Commitments and Contingencies	$ 152,100,000

[1] The tables above do not include $5.0 million and $5.3 million of Substandard loans held for sale at September 30, 2013 and December 31, 2012, respectively.