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Note 13 - Accumulated Other Comprehensive Income (Loss) (Tables)
 3 Months Ended
Mar. 31, 2018
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
    Unrealized Gains   Unrealized Gains            
    (Losses) on   (Losses) on       Fair Value    
    Available for Sale   Cash flow   Defined Benefit   Option Elected    
    Securities   Hedges   Pension Items   on Liabilities   Total
    (In thousands)
Beginning balance, net of tax   $
(5,522
 )   $
231
     $
(3,695
 )   $
-
     $
(8,986
 )
Reclassification of the Income Tax Effects of the Tax Cuts and Jobs Act from AOCL to Retained Earnings    
(1,325
 )    
50
      
(798
 )    
-
      
(2,073
 )
Impact of adoption of Accounting Standard Update 2016-01    
-
      
-
      
-
      
775
      
775
  
                                         
Other comprehensive income before reclassifications, net of tax    
(6,640
 )    
5,481
      
-
      
-
      
(1,159
 )
                                         
Amounts reclassified from accumulated other comprehensive income, net of tax    
-
      
180
      
84
      
-
      
264
  
                                         
Net current period other comprehensive income, net of tax    
(6,640
 )    
5,661
      
84
      
-
      
(895
 )
                                         
Ending balance, net of tax   $
(13,487
 )   $
5,942
     $
(4,409
 )   $
775
     $
(11,179
 )
    Unrealized Gains        
    (Losses) on        
    Available for Sale   Defined Benefit    
    Securities   Pension Items   Total
    (In thousands)
Beginning balance, net of tax   $
(3,859
 )   $
(4,503
 )   $
(8,362
 )
Other comprehensive income before reclassifications, net of tax    
1,148
      
-
      
1,148
  
                         
Amounts reclassified from accumulated other comprehensive income, net of tax    
-
      
80
      
80
  
                         
Net current period other comprehensive income, net of tax    
1,148
      
80
      
1,228
  
                         
Ending balance, net of tax   $
(2,711
 )   $
(4,423
 )   $
(7,134
 )
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]
For the three months ended March 31, 2018
 
 
Amounts Reclassified from
 
 
 
 
Details about Accumulated Other
 
Accumulated Other
 
 
 
Affected Line Item in the Statement
Comprehensive Loss Components
 
Comprehensive Loss
 
 
 
Where Net Income is Presented
 
 
(In thousands)
 
 
 
 
Cash flow hedges:   $
(263
)
 
    
Interest expense
Interest rate swaps    
83
 
 
    
Tax benefit
    $
(180
)
 
    
Net of tax
                 
Amortization of defined benefit pension items:
 
 
 
 
 
 
 
 
Actuarial losses
 
$
(132
)
(1)
 
 
Other operating expense
Prior service credits
 
 
10
(1)
 
 
Other operating expense
 
 
 
(122
)
 
 
 
Total before tax
 
 
 
38
 
 
 
 
Tax benefit
 
 
$
(84
)
 
 
 
Net of tax
For the three months ended March 31, 2017
 
 
Amounts Reclassified from
 
 
 
 
Details about Accumulated Other
 
Accumulated Other
 
 
 
Affected Line Item in the Statement
Comprehensive Loss Components
 
Comprehensive Loss
 
 
 
Where Net Income is Presented
 
 
(In thousands)
 
 
 
 
Amortization of defined benefit pension items:
 
 
 
 
 
 
 
 
Actuarial losses
 
$
(151
)
(1)
 
 
Other operating expense
Prior service credits
 
 
11
(1)
 
 
Other operating expense
 
 
 
(140
)
 
 
 
Total before tax
 
 
 
60
 
 
 
 
Tax benefit
 
 
$
(80
)
 
 
 
Net of tax