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Note 7 - Loans and Related Allowance for Loan and Lease Losses (Details) - Troubled Debt Restructurings Subsequently Defaulted (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2014
Commercial and Industrial [Member]
Sep. 30, 2013
Commercial and Industrial [Member]
Sep. 30, 2014
Commercial Real Estate Mortgage [Member]
Sep. 30, 2013
Commercial Real Estate Mortgage [Member]
Financing Receivable, Modifications [Line Items]              
Number of Contracts 0 0   0 1 0 1
Recorded Investment     $ 0 $ 0 $ 565,000 $ 0 $ 190,000