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Note 9 - Components of Accumulated Other Comprehensive Loss (Tables)
 3 Months Ended
Mar. 31, 2016
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
 
 
Net Unrealized
Gain (Loss) on
Securities
 
 
Adjustments Related
to Pension Benefits
 
 
Accumulated Other Comprehensive
Loss
 
Balance at December 31, 201
4
   $ (1,582
)
   $ (4,090
)
   $ (5,672
)
Unrealized holding gains on available for sale securities, net of tax of $1,320
     2,452       ---       2,452  
Reclassification adjustment, net of tax of $1
     1       ---       1  
Balance at
March 31, 2015
   $ 871     $ (4,090
)
   $ (3,219
)
                         
Balance at December 31, 201
5
   $ (2,666
)
   $ (5,270
)
   $ (7,936
)
Unrealized holding gains on available for sale securities net of tax of $1,809
     3,359       ---       3,359  
Reclassification adjustment, net of tax of ($8)
     (16
)
     ---       (16
)
Balance at
March 31, 2016
 
$
677
 
 
$
(5,270
)
 
$
(4,593
)
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]
 
 
Three Months Ended
 
 
 
March 31, 2016
 
 
March 31, 2015
 
Reclassification out of unrealized gains and losses on available-for-sale securities:
 
 
 
 
 
 
 
 
Realized securities (gains) losses, net
 
$
(24
)
   $ 2  
Income tax expense (benefit)
 
 
8
 
     (1
)
Realized (gains) losses on available-for-sale securities, net of tax, reclassified out of accumulated other comprehensive income
 
$
(16
)
   $ 1