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Other Comprehensive Income
 12 Months Ended
Dec. 31, 2018
Equity [Abstract]  
Other Comprehensive Income
Other Comprehensive Income

Other comprehensive income components and related tax effects were as follows for the years ended December 31, 2018, 2017, and 2016: 
 
2018
 
2017
 
2016
Unrealized holding losses on available for sale securities
$
(5,073
)
 
$
(136
)
 
$
(1,838
)
Less reclassification adjustment for gains recognized in earnings
0

 
(160
)
 
(83
)
Net unrealized losses
(5,073
)
 
(296
)
 
(1,921
)
Tax effect
1,066

 
104

 
672

Net-of-tax amount
(4,007
)
 
(192
)
 
(1,249
)
Unrealized holding gains (losses) on available for sale securities for which a portion of an other-than-temporary impairment has been recognized in earnings
0

 
134

 
(442
)
Less reclassification adjustment for gains recognized in earnings
0

 
(1,383
)
 
(922
)
Net unrealized gains
0

 
(1,249
)
 
(1,364
)
Tax effect
0

 
437

 
477

Net-of-tax amount
0

 
(812
)
 
(887
)
Actuarial gain (loss) on postemployment health care plan
404

 
808

 
(282
)
Net amortization of transition obligation and actuarial gain
84

 
192

 
184

Net unrealized gain (loss) on postemployment health care plan
488

 
1,000

 
(98
)
Tax effect
(102
)
 
(175
)
 
34

Net-of-tax amount
386

 
825

 
(64
)
Unrealized gain (loss) on interest rate swap
(204
)
 
10

 
(63
)
Less reclassification adjustment for losses recognized in earnings
164

 
288

 
340

Net unrealized gain (loss)
(40
)
 
298

 
277

Tax effect
8

 
(104
)
 
(97
)
Net-of-tax amount
(32
)
 
194

 
180

Other comprehensive income (loss)
$
(3,653
)
 
$
15

 
$
(2,020
)


The following is a summary of the change in the accumulated other comprehensive income (loss) balance, net of tax, for the years ended December 31, 2018, 2017, and 2016. 
 
Balance
12/31/17
 
Comprehensive
Income (Loss)
 
Reclassification of
Disproportionate
Tax Effect
 
Balance
12/31/18
Unrealized gains (losses) on securities available for sale
$
473

 
$
(4,007
)
 
$
0

 
$
(3,534
)
Unrealized gain (loss) on postretirement benefits plan
(690
)
 
386

 
0

 
(304
)
Unrealized loss on interest rate swap
(126
)
 
(32
)
 
0

 
(158
)
Total
$
(343
)
 
$
(3,653
)
 
$
0

 
$
(3,996
)

 
Balance
12/31/16
 
Comprehensive
Income (Loss)
 
Reclassification of
Disproportionate
Tax Effect
 
Balance
12/31/17
Unrealized gains (losses) on securities available for sale
$
1,393

 
$
(1,004
)
 
$
84

 
$
473

Unrealized gain (loss) on postretirement benefits plan
(1,217
)
 
825

 
(298
)
 
(690
)
Unrealized loss on interest rate swap
(297
)
 
194

 
(23
)
 
(126
)
Total
$
(121
)
 
$
15

 
$
(237
)
 
$
(343
)
 
 
Balance
1/1/16
 
Comprehensive
Income (Loss)
 
Reclassification of
Disproportionate
Tax Effect
 
Balance
12/31/16
Unrealized gains (losses) on securities available for sale
$
3,529

 
$
(2,136
)
 
$
0

 
$
1,393

Unrealized gain (loss) on postretirement benefits plan
(1,153
)
 
(64
)
 
0

 
(1,217
)
Unrealized loss on interest rate swap
(477
)
 
180

 
0

 
(297
)
Total
$
1,899

 
$
(2,020
)
 
$
0

 
$
(121
)