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Note 13 - Accumulated Other Comprehensive Income (Tables)
 9 Months Ended
Sep. 30, 2013
Disclosure Text Block [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
   
Unrealized Gains
and (Losses) on
Available for Sale
Securities
   
Defined Benefit
Pension Items
   
Total
 
   
(In thousands)
 
Beginning balance, net of tax
  $ 18,921     $ (6,784 )   $ 12,137  
Other comprehensive income (loss) before reclassifications, net of tax
    (19,947 )     -     $ (19,947 )
                         
Amounts reclassified from accumulated other comprehensive income (loss), net of tax
    (874 )     503       (371 )
                         
Net current period other comprehensive income (loss), net of tax
    (20,821 )     503       (20,318 )
                         
Ending balance, net of tax
  $ (1,900 )   $ (6,281 )   $ (8,181 )
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]
Details about Accumulated Other
Comprehensive Income Components
 
Amounts Reclassified from
Accumulated Other
Comprehensive Income
     
Affected Line Item in the Statement
Where Net Income is Presented
(Dollars in thousands)
Unrealized gains (losses) on available for sale securities:
  $ 96      
 Net gain on sale of securities
      (42 )    
 Tax expense
    $ 54      
 Net of tax
               
               
OTTI charges
  $ (916 )    
 OTTI charge
      400      
 Tax benefit
    $ (516 )    
 Net of tax
               
               
Amortization of defined benefit pension items:
             
Actuarial losses
  $ (309 ) (1)  
 Other expense
Prior service credits
    11   (1)  
 Other expense
      (298 )    
Total before tax
      130      
 Tax benefit
    $ (168 )    
 Net of tax
Details about Accumulated Other
Comprehensive Income Components
 
Amounts Reclassified from
Accumulated Other
Comprehensive Income
     
Affected Line Item in the Statement
Where Net Income is Presented
(Dollars in thousands)
Unrealized gains losses on available for sale securities:
  $ 2,972      
 Net gain on sale of securities
      (1,299 )    
 Tax expense
    $ 1,673      
 Net of tax
               
               
OTTI charges
  $ (1,419 )    
 OTTI charge
      620      
 Tax benefit
    $ (799 )    
 Net of tax
               
               
Amortization of defined benefit pension items:
             
Actuarial losses
  $ (927 ) (1)  
 Other expense
Prior service credits
    33   (1)  
 Other expense
      (894 )    
Total before tax
      391      
 Tax benefit
    $ (503 )    
 Net of tax