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Note 19 - Derivative Financial Instruments (Tables)
 12 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Derivative Instruments [Table Text Block]
    December 31, 2016   December 31, 2015
    Notional   Net Carrying   Notional   Net Carrying
    Amount   Value
(1)
   Amount   Value
(1)
             
Interest rate swaps (hedge)   $
182,177
     $
6,350
     $
28,588
     $
48
  
Interest rate swaps (hedge)    
34,916
      
(658
 )    
99,955
      
(1,515
 )
Interest rate swaps (non-hedge)    
36,321
      
(2,728
 )    
36,321
      
(2,799
 )
Total derivatives   $
253,414
     $
2,964
     $
164,864
     $
(4,266
 )
Derivative Instruments, Gain (Loss) [Table Text Block]
    For the year ended
    December 31,
(In thousands)   2016   2015   2014
             
Financial Derivatives:                        
Interest rate swaps (non-hedge)    
71
      
(561
 )    
(3,919
 )
Interest rate swaps (hedge)    
1,466
      
(1,036
 )    
(124
 )
Net Gain (loss)
(1)
   $
1,537
     $
(1,597
 )   $
(4,043
 )
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
    December 31, 2016
                Gross Amounts Not Offset in the Consolidated Statement of Condition    
(In thousands)   Gross Amount of
Recognized Assets		   Gross Amount Offset
in the Statement of
Condition		   Net Amount of Assets
Presented in the Statement of
Condition		   Financial Instruments   Cash Collateral Received   Net Amount
                                                 
Interest rate swaps   $
6,350
     $
-
     $
6,350
     $
3,386
     $
2,964
     $
-
  
                Gross Amounts Not Offset in the
Consolidated Statement of
Condition		    
(In thousands)   Gross Amount of
Recognized
Liabilities		   Gross Amount Offset
in the Statement of
Condition		   Net Amount of Liabilities
Presented in the Statement of
Condition		   Financial
Instruments		   Cash Collateral
Pledged		   Net Amount
                                                 
Interest rate swaps   $
3,386
     $
-
     $
3,386
     $
3,386
     $
-
     $
-
  
    December 31, 2015
                Gross Amounts Not Offset in the
Consolidated Statement of
Condition		    
(In thousands)   Gross Amount of
Recognized Assets		   Gross Amount Offset
in the Statement of
Condition		   Net Amount of
Assets Presented in
the Statement of Condition		   Financial
Instruments		   Cash Collateral Received   Net Amount
                                                 
Interest rate swaps   $
48
     $
-
     $
48
     $
48
     $
-
     $
-
  
                Gross Amounts Not Offset in the Consolidated Statement of Condition    
(In thousands)   Gross Amount of
Recognized
Liabilities		   Gross Amount Offset
in the Statement of
Condition		   Net Amount of Liabilities
Presented in the Statement of
Condition		   Financial Instruments   Cash Collateral Pledged   Net Amount
                                                 
Interest rate swaps   $
4,314
     $
-
     $
4,314
     $
48
     $
4,266
     $
-