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Accumulated Other Comprehensive Income (Loss) (Tables)
 9 Months Ended
Sep. 30, 2017
Other Comprehensive Income [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss)
Accumulated other comprehensive income (loss) includes the following items by components for the three and nine month periods ending September 30, 2017 and 2016 (in thousands):
 
 
Defined Benefit Pension
 
Defined Benefit Post-Retirement
 
Foreign Currency Translation
 
Total
Balance as of June 30, 2016
 
(93,010
)
 
(297
)
 
(1,085
)
 
(94,392
)
Other comprehensive income (loss) before reclassifications:
 
 
 
 
 
 
 
 
Foreign currency translation adjustment
 
—

 
—

 
(397
)
 
(397
)
Amounts reclassified from accumulated other comprehensive income:
 
 
 
 
 
 
 
 
Actuarial costs (reclassified to salaries, wages and benefits)
 
3,368

 
40

 
—

 
3,408

Negative prior service cost (reclassified to salaries, wages and benefits)
 
—

 
(26
)
 
—

 
(26
)
Income tax expense
 
(1,222
)
 
(5
)
 
141

 
(1,086
)
Other comprehensive income, net of tax
 
2,146

 
9

 
(256
)
 
1,899

Balance as of September 30, 2016
 
(90,864
)
 
(288
)
 
(1,341
)
 
(92,493
)
 
 
 
 
 
 
 
 
 
Balance as of December 31, 2015
 
(97,302
)
 
(315
)
 
(1,395
)
 
(99,012
)
Other comprehensive income (loss) before reclassifications:
 
 
 
 
 
 
 
 
Foreign currency translation adjustment
 
—

 
—

 
75

 
75

Amounts reclassified from accumulated other comprehensive income:
 
 
 
 
 
 
 
 
Actuarial costs (reclassified to salaries, wages and benefits)
 
10,104

 
120

 
—

 
10,224

Negative prior service cost (reclassified to salaries, wages and benefits)
 
—

 
(78
)
 
—

 
(78
)
Income tax expense
 
(3,666
)
 
(15
)
 
(21
)
 
(3,702
)
Other comprehensive income, net of tax
 
6,438

 
27

 
54

 
6,519

Balance as of September 30, 2016
 
(90,864
)
 
(288
)
 
(1,341
)
 
(92,493
)
 
 
Defined Benefit Pension
 
Defined Benefit Post-Retirement
 
Foreign Currency Translation
 
Total
Balance as of June 30, 2017
 
(74,619
)
 
(1,227
)
 
(1,341
)
 
(77,187
)
Other comprehensive income (loss) before reclassifications:
 
 
 
 
 
 
 
 
Actuarial loss for retiree liabilities
 
(5,821
)
 
—

 
—

 
(5,821
)
Foreign currency translation adjustment
 
—

 
—

 
(24
)
 
(24
)
Amounts reclassified from accumulated other comprehensive income:
 
 
 
 
 
 
 
 
Pension settlement (reclassified to salaries, wages and benefits)
 
12,923

 
—

 
—

 
12,923

Actuarial costs (reclassified to salaries, wages and benefits)
 
1,944

 
71

 
—

 
2,015

Negative prior service cost (reclassified to salaries, wages and benefits)
 
—

 
(13
)
 
—

 
(13
)
Income tax expense
 
(3,283
)
 
(21
)
 
9

 
(3,295
)
Other comprehensive income, net of tax
 
5,763

 
37

 
(15
)
 
5,785

Balance as of September 30, 2017
 
(68,856
)
 
(1,190
)
 
(1,356
)
 
(71,402
)
 
 
 
 
 
 
 
 
 
Balance as of December 31, 2016
 
(77,088
)
 
(1,301
)
 
(1,477
)
 
(79,866
)
Other comprehensive income (loss) before reclassifications:
 
 
 
 
 
 
 
 
Actuarial loss for retiree liabilities
 
(5,821
)
 
—

 
—

 
(5,821
)
Foreign currency translation adjustment
 
—

 
—

 
186

 
186

Amounts reclassified from accumulated other comprehensive income:
 
 
 
 
 
 
 
 
Pension settlement (reclassified to salaries, wages and benefits)
 
12,923

 
—

 
—

 
12,923

Actuarial costs (reclassified to salaries, wages and benefits)
 
5,819

 
213

 
—

 
6,032

Negative prior service cost (reclassified to salaries, wages and benefits)
 
—

 
(39
)
 
—

 
(39
)
Income tax expense
 
(4,689
)
 
(63
)
 
(65
)
 
(4,817
)
Other comprehensive income, net of tax
 
8,232

 
111

 
121

 
8,464

Balance as of September 30, 2017
 
(68,856
)
 
(1,190
)
 
(1,356
)
 
(71,402
)