Note 10 - Allowance for Loan Losses and Credit Quality Information (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012
Note 10 - Allowance for Loan Losses and Credit Quality Information (Details) [Line Items]
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest	$ 10,394,000		$ 17,496,000
Impaired Financing Receivable, Related Allowance	1,272,000		3,778,000
Loan Receivable For Which Value Of Collateral Sufficient To Repay	7,700,000		7,800,000
Financing Receivable, Modifications, Recorded Investment	11,459,000		19,229,000
Restructured Loans Classified Performing				500,000
Restructured Loans Classified Non Performing				500,000
Loans and Leases Receivable, Impaired, Commitment to Lend	0		0
Maximum Time For Loan Modifications	6 months
Allowance for Credit Losses, Change in Method of Calculating Impairment	600,000		2,900,000
Percentage Reserves For Loan Losses On Troubled Debt Restructurings	7.90%		25.60%
Loans and Leases Receivable, Allowance	7,923,000	8,696,000	11,401,000	16,505,000	20,359,000	21,608,000
Non-Accuring Loans[Member]
Note 10 - Allowance for Loan Losses and Credit Quality Information (Details) [Line Items]
Impaired Financing Receivable, Related Allowance	900,000		3,400,000
Performing Financing Receivable [Member]
Note 10 - Allowance for Loan Losses and Credit Quality Information (Details) [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 0