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Accumulated Other Comprehensive Income (Tables)
 9 Months Ended
Sep. 30, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Schedule of Changes in Accumulated Other Comprehensive Income
Changes in accumulated other comprehensive income (loss) for the nine months ended September 30, 2018 and the year ended December 31, 2017 are as follows (in thousands):
 
Unrealized Gains and Losses on Available-for-Sale Securities
 
Changes in Pension Plan Assets and Benefit Obligations
 
Total
Nine Months Ended September 30, 2018:
 
 
 
 
 
Balance at beginning of period
$
(2,200
)
 
$
(142
)
 
$
(2,342
)
Cumulative effect of changes in accounting principles
(498
)
 
(27
)
 
(525
)
Balance at beginning of period, as adjusted
(2,698
)
 
(169
)
 
(2,867
)
Before reclassifications
(4,581
)
 
9

 
(4,572
)
Reclassifications
6

 
—

 
6

Balance at end of period
$
(7,273
)
 
$
(160
)
 
$
(7,433
)
 
 
 
 
 
 
Year Ended December 31, 2017:
 

 
 

 
 

Balance at beginning of period
$
(2,633
)
 
$
16

 
$
(2,617
)
Before reclassifications
585

 
(158
)
 
427

Reclassifications
(152
)
 
—

 
(152
)
Balance at end of period
$
(2,200
)
 
$
(142
)
 
$
(2,342
)






Reclassifications out of accumulated other comprehensive income (loss) during the three and nine months ended September 30, 2018 and 2017 and the affected line items in the consolidated condensed statements of income are as follows (in thousands):
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
 
Affected Line Item in the Consolidated Condensed Statements of Income
 
2018
 
2017
 
2018
 
2017
 
Realized gain (loss) on sale of debt securities
$
(7
)
 
$
78

 
$
(8
)
 
$
218

 
Net gain (loss) from sales of debt securities, available-for-sale
Less provision for income taxes
(2
)
 
27

 
(2
)
 
75

 
Provision for income taxes
Reclassification adjustment, net of taxes
$
(5
)
 
51

 
(6
)
 
143

 
 
Schedule of Reclassifications Out of Accumulated Other Comprehensive Income
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
 
Affected Line Item in the Consolidated Condensed Statements of Income
 
2018
 
2017
 
2018
 
2017
 
Realized gain (loss) on sale of debt securities
$
(7
)
 
$
78

 
$
(8
)
 
$
218

 
Net gain (loss) from sales of debt securities, available-for-sale
Less provision for income taxes
(2
)
 
27

 
(2
)
 
75

 
Provision for income taxes
Reclassification adjustment, net of taxes
$
(5
)
 
51

 
(6
)
 
143