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Note 11 - Accumulated Other Comprehensive Income (Tables)
9 Months Ended
Sep. 30, 2017
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
   
Three Months Ended September 30, 2017
 
   
Unrealized Gains (Losses) on Available-for-Sale Securities
   
Employee Benefit Plans
   
Total
 
(Amounts in thousands)
 
 
 
 
 
 
 
 
 
 
 
 
Beginning balance
  $
1,302
    $
(1,303
)   $
(1
)
Other comprehensive loss before reclassifications
   
(106
)    
(1
)    
(107
)
Reclassified from AOCI
   
-
     
41
     
41
 
Other comprehensive (loss) income, net
   
(106
)    
40
     
(66
)
Ending balance
  $
1,196
    $
(1,263
)   $
(67
)
   
Three Months Ended September 30, 2016
 
   
Unrealized Gains (Losses) on Available-for-Sale Securities
   
Employee Benefit
Plans
   
Total
 
(Amounts in thousands)
 
 
 
 
 
 
 
 
 
 
 
 
Beginning balance
  $
(1,706
)   $
(1,311
)   $
(3,017
)
Other comprehensive income (loss) before reclassifications
   
465
     
(2
)    
463
 
Reclassified from AOCI
   
2,881
     
43
     
2,924
 
Other comprehensive income, net
   
3,346
     
41
     
3,387
 
Ending balance
  $
1,640
    $
(1,270
)   $
370
 
   
Nine Months Ended September 30, 2017
 
   
Unrealized Gains (Losses) on Available-for-Sale Securities
   
Employee Benefit Plans
   
Total
 
(Amounts in thousands)
 
 
 
 
 
 
 
 
 
 
 
 
Beginning balance
  $
(544
)   $
(1,467
)   $
(2,011
)
Other comprehensive income before reclassifications
   
1,329
     
83
     
1,412
 
Reclassified from AOCI
   
411
     
121
     
532
 
Other comprehensive income, net
   
1,740
     
204
     
1,944
 
Ending balance
  $
1,196
    $
(1,263
)   $
(67
)
   
Nine Months Ended September 30, 2016
 
   
Unrealized Gains (Losses) on Available-for-Sale Securities
   
Employee Benefit
Plans
   
Total
 
(Amounts in thousands)
 
 
 
 
 
 
 
 
 
 
 
 
Beginning balance
  $
(3,885
)   $
(1,362
)   $
(5,247
)
Other comprehensive income (loss) before reclassifications
   
2,588
     
(36
)    
2,552
 
Reclassified from AOCI
   
2,937
     
128
     
3,065
 
Other comprehensive income, net
   
5,525
     
92
     
5,617
 
Ending balance
  $
1,640
    $
(1,270
)   $
370
 
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]
   
Three Months Ended
   
Nine Months Ended
   
 
 
 
   
September 30,
   
September 30,
   
Income Statement
 
(Amounts in thousands)
 
2017
   
2016
   
2017
   
2016
   
Line Item Affected
 
Available-for-sale securities
                                       
Loss (gain) recognized
  $
-
    $
(25
)   $
657
    $
53
   
Net gain (loss) on sale of securities
 
Credit-related OTTI recognized
   
-
     
4,635
     
-
     
4,646
   
Net impairment losses recognized in earnings
 
Reclassified out of AOCI, before tax
   
-
     
4,610
     
657
     
4,699
   
Income before income taxes
 
Income tax expense
   
-
     
1,729
     
246
     
1,762
   
Income tax expense
 
Reclassified out of AOCI, net of tax
   
-
     
2,881
     
411
     
2,937
   
Net income
 
Employee benefit plans
                                       
Amortization of prior service cost
   
57
     
57
     
171
     
170
   
(1)
 
Amortization of net actuarial benefit cost
   
8
     
12
     
23
     
35
   
(1)
 
Reclassified out of AOCI, before tax
   
65
     
69
     
194
     
205
   
Income before income taxes
 
Income tax expense
   
24
     
26
     
73
     
77
   
Income tax expense
 
Reclassified out of AOCI, net of tax
   
41
     
43
     
121
     
128
   
Net income
 
Total reclassified out of AOCI, net of tax
  $
41
    $
2,924
    $
532
    $
3,065
   
Net income