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Other Comprehensive Income (Loss)
 12 Months Ended
Dec. 31, 2017
Equity [Abstract]  
Other Comprehensive Income (Loss)
Other Comprehensive Income (Loss)

The tables below summarize the changes in accumulated other comprehensive income (loss) by component for the years ended December 31, 2017 and 2016, net of tax:
December 31, 2017
 
Unrealized
Gains and Losses on
Available-for-Sale
Securities
 
Postretirement
Benefit Items
 
Total
 
 
 
 
 
 
 
Beginning Balance
 
$
(6,312
)
 
$
(92
)
 
$
(6,404
)
Other Comprehensive Income (Loss) Before
Reclassification
 
4,778

 
(143
)
 
4,635

Amounts Reclassified from Accumulated
Other Comprehensive Income (Loss)
 
(387
)
 
5

 
(382
)
Net Current Period Other
 
 

 
 

 
 

Comprehensive Income (Loss)
 
4,391

 
(138
)
 
4,253

ASU 2018-02 Adoption
 
(414
)
 
(55
)
 
(469
)
Ending Balance
 
$
(2,335
)
 
$
(285
)
 
$
(2,620
)

December 31, 2016
 
Unrealized
Gains and Losses on
Available-for-Sale
Securities
 
Postretirement
Benefit Items
 
Total
 
 
 
 
 
 
 
Beginning Balance
 
$
3,890

 
$
(78
)
 
$
3,812

Other Comprehensive Income (Loss) Before
Reclassification
 
(8,916
)
 
(18
)
 
(8,934
)
Amounts Reclassified from Accumulated
Other Comprehensive Income (Loss)
 
(1,286
)
 
4

 
(1,282
)
Net Current Period Other
 
 

 
 

 
 

Comprehensive Income (Loss)
 
(10,202
)
 
(14
)
 
(10,216
)
Ending Balance
 
$
(6,312
)
 
$
(92
)
 
$
(6,404
)


The table below summarizes the classifications out of accumulated other comprehensive income (loss) by component for the year ended December 31, 2017:
Details about Accumulated Other Comprehensive Income (Loss) Components
 
Amount Reclassified From Accumulated Other Comprehensive Income (Loss)
 
Affected Line Item in the Statement Where Net Income is Presented
 
 
 
 
 
Unrealized Gains and Losses on
 
 

 
 
Available-for-Sale Securities
 
$
596

 
Net Gain (Loss) on Securities
 
 
(209
)
 
Income Tax Expense
 
 
387

 
Net of Tax
Amortization of Post Retirement Plan Items
 
 

 
 
Actuarial Gains (Losses)
 
$
(8
)
 
Salaries and Employee Benefits
 
 
3

 
Income Tax Expense
 
 
(5
)
 
Net of Tax
 
 
 
 
 
Total Reclassifications for the Period
 
$
382

 
 
The table below summarizes the classifications out of accumulated other comprehensive income (loss) by component for the year ended December 31, 2016:
Details about Accumulated Other Comprehensive Income (Loss) Components
 
Amount Reclassified From Accumulated Other Comprehensive Income (Loss)
 
Affected Line Item in the Statement Where Net Income is Presented
 
 
 
 
 
Unrealized Gains and Losses on
 
 

 
 
Available-for-Sale Securities
 
$
1,979

 
Net Gain (Loss) on Securities
 
 
(693
)
 
Income Tax Expense
 
 
1,286

 
Net of Tax
Amortization of Post Retirement Plan Items
 
 

 
 
Actuarial Gains (Losses)
 
$
(6
)
 
Salaries and Employee Benefits
 
 
2

 
Income Tax Expense
 
 
(4
)
 
Net of Tax
 
 
 
 
 
Total Reclassifications for the Period
 
$
1,282

 
 


The table below summarizes the classifications out of accumulated other comprehensive income (loss) by component for the year ended December 31, 2015:
Details about Accumulated Other Comprehensive Income (Loss) Components
 
Amount Reclassified From Accumulated Other Comprehensive Income (Loss)
 
Affected Line Item in the Statement Where Net Income is Presented
 
 
 
 
 
Unrealized Gains and Losses on
 
 

 
 
Available-for-Sale Securities
 
$
725

 
Net Gain (Loss) on Securities
 
 
(254
)
 
Income Tax Expense
 
 
471

 
Net of Tax
Amortization of Post Retirement Plan Items
 
 

 
 
Actuarial Gains (Losses)
 
$
(5
)
 
Salaries and Employee Benefits
 
 
2

 
Income Tax Expense
 
 
(3
)
 
Net of Tax
 
 
 
 
 
Total Reclassifications for the Period
 
$
468