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Note 7 - Loans and Related Allowance for Loan and Lease Losses (Details) - Troubled Debt Restructurings (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Term Modification [Member] | Commercial and Industrial [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of contracts   4
Term Modification [Member] | Residential Real Estate Mortgage [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of contracts 1 2
Term Modification [Member] | Commercial Real Estate Mortgage [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of contracts   1
Term Modification [Member] | Consumer Installment [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of contracts   1
Other Restructurings [Member] | Residential Real Estate Mortgage [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of contracts   1
Other Restructurings [Member] | Consumer Installment [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of contracts 1  
Commercial and Industrial [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of contracts   4
Pre-modification outstanding recorded investment (in Dollars)   $ 735
Residential Real Estate Mortgage [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of contracts 1 3
Pre-modification outstanding recorded investment (in Dollars) 49 383
Commercial Real Estate Mortgage [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of contracts   1
Pre-modification outstanding recorded investment (in Dollars)   644
Consumer Installment [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of contracts 1 1
Pre-modification outstanding recorded investment (in Dollars) $ 7 $ 644