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Note 9 - Components of Accumulated Other Comprehensive Loss (Tables)
 9 Months Ended
Sep. 30, 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 loss on available for sale securities, net of tax of ($334)
     (624
)
     ---       (624
)
Reclassification adjustment, net of tax of ($2)
     (3
)
     ---       (3
)
Balance at
September 30, 2015
   $ (2,209
)
   $ (4,090
)
   $ (6,299
)
                         
Balance at December 31, 201
5
   $ (2,666
)
   $ (5,270
)
   $ (7,936
)
Unrealized holding gain on available for sale securities net of tax of $2,415
     4,484       ---       4,484  
Reclassification adjustment, net of tax of ($54)
     (99
)
     ---       (99
)
Balance at
September 30, 2016
 
$
1,719
 
 
$
(5,270
)
 
$
(3,551
)
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]
 
 
3 Months Ended
 
 
9 Months Ended
 
 
 
September 30,
2016
 
 
September 30,
2015
 
 
September 30,
2016
 
 
September 30,
2015
 
Reclassifications out of unrealized gains and losses on available-for-sale securities:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Realized securities gain, net
 
$
(101
)
   $ (2 ) 
 
$
(153
)
   $ (5 ) 
Income taxes
 
 
(35
)
     (1 ) 
 
 
(54
)
     (2 ) 
Realized gain on available-for-sale securities, net of tax, reclassified out of accumulated other comprehensive income
 
$
(66
)
   $ (1 ) 
 
$
(99
)
   $ (3 )