Note 5 - Loans (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 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	$ 56,800,000
Collateral Dependent Impaired Loans, Measured By Third Party Appraisals, Percentage	84.40%
Collateral Dependent Impaired Loans, Measured Internally	10,500,000
Collateral Dependent Impaired Loans, Measured Internally, Percentage	15.60%
Financing Receivable Modifications Number of Contracts Transferred to Non Accrual		0
Financing Receivable Modifications Recorded Investment Transferred to Non-Accrual	2,000,000
Impaired Financing Receivable, Recorded Investment	133,606,000		116,045,000
Commitments and Contingencies
Construction [Member]
Note 5 - Loans (Details) [Line Items]
Financing Receivable Modifications Number of Contracts Transferred to Non Accrual	1
Financing Receivable Modifications Recorded Investment Transferred to Non-Accrual	700,000
Commercial Business And Other [Member]
Note 5 - Loans (Details) [Line Items]
Financing Receivable Modifications Number of Contracts Transferred to Non Accrual	1
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	74,250,000		73,342,000
Extension Of Credit [Member]
Note 5 - Loans (Details) [Line Items]
Commitments and Contingencies	96,100,000
Extension Of Lines Of Credit [Member]
Note 5 - Loans (Details) [Line Items]
Commitments and Contingencies	$ 238,300,000