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Accumulated Other Comprehensive Income (Tables)
 6 Months Ended
Jun. 30, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Schedule of Accumulated Other Comprehensive Income (Loss)
       Changes in Accumulated Other Comprehensive Income (Loss) (net of tax) by component are presented below (in thousands):
 
 
 
Three Months Ended June 30, 2017
 
Three Months Ended June 30, 2016
 
 
 
Unrecognized Pension and Post-retirement Benefit Costs
 
Net Unrealized Gains (Losses) on Marketable Securities
 
Net Losses on Cash Flow Hedges
 
Accumulated Other Comprehensive Income (Loss)
 
Unrecognized Pension and Post-retirement Benefit Costs
 
Net Unrealized Gains (Losses) on Marketable Securities
 
Net Losses on Cash Flow Hedges
 
Accumulated Other Comprehensive Income (Loss)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Balance at beginning of period
$
(24,457
)
 
$
32,872

 
$
(11,599
)
 
$
(3,184
)
 
$
(30,256
)
 
$
28,394

 
$
(11,770
)
 
$
(13,632
)
 
Other comprehensive income before reclassifications
—

 
3,558

 
—

 
3,558

 
—

 
2,224

 
—

 
2,224

 
Amounts reclassified from accumulated other comprehensive income (loss)
(458
)
 
(4,134
)
 
85

 
(4,507
)
 
(276
)
 
(1,693
)
 
77

 
(1,892
)
Balance at end of period
$
(24,915
)
 
$
32,296

 
$
(11,514
)
 
$
(4,133
)
 
$
(30,532
)
 
$
28,925

 
$
(11,693
)
 
$
(13,300
)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Six Months Ended June 30, 2017
 
Six Months Ended June 30, 2016
 
 
 
Unrecognized Pension and Post-retirement Benefit Costs
 
Net Unrealized Gains (Losses) on Marketable Securities
 
Net Losses on Cash Flow Hedges
 
Accumulated Other Comprehensive Income (Loss)
 
Unrecognized Pension and Post-retirement Benefit Costs
 
Net Unrealized Gains (Losses) on Marketable Securities
 
Net Losses on Cash Flow Hedges
 
Accumulated Other Comprehensive Income (Loss)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Balance at beginning of period
$
(23,928
)
 
$
28,463

 
$
(11,651
)
 
$
(7,116
)
 
$
(29,869
)
 
$
27,765

 
$
(11,810
)
 
$
(13,914
)
 
Other comprehensive income before reclassifications
—

 
9,723

 
—

 
9,723

 
—

 
3,966

 
—

 
3,966

 
Amounts reclassified from accumulated other comprehensive income (loss)
(987
)
 
(5,890
)
 
137

 
(6,740
)
 
(663
)
 
(2,806
)
 
117

 
(3,352
)
Balance at end of period
$
(24,915
)
 
$
32,296

 
$
(11,514
)
 
$
(4,133
)
 
$
(30,532
)
 
$
28,925

 
$
(11,693
)
 
$
(13,300
)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Twelve Months Ended June 30, 2017
 
Twelve Months Ended June 30, 2016
 
 
 
Unrecognized Pension and Post-retirement Benefit Costs
 
Net Unrealized Gains (Losses) on Marketable Securities
 
Net Losses on Cash Flow Hedges
 
Accumulated Other Comprehensive Income (Loss)
 
Unrecognized Pension and Post-retirement Benefit Costs
 
Net Unrealized Gains (Losses) on Marketable Securities
 
Net Losses on Cash Flow Hedges
 
Accumulated Other Comprehensive Income (Loss)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Balance at beginning of period
$
(30,532
)
 
$
28,925

 
$
(11,693
)
 
$
(13,300
)
 
$
(34,331
)
 
$
35,726

 
$
(11,959
)
 
$
(10,564
)
 
Other comprehensive income before reclassifications
7,363

 
12,661

 
—

 
20,024

 
3,777

 
2,080

 
—

 
5,857

 
Amounts reclassified from accumulated other comprehensive income (loss)
(1,746
)
 
(9,290
)
 
179

 
(10,857
)
 
22

 
(8,881
)
 
266

 
(8,593
)
Balance at end of period
$
(24,915
)
 
$
32,296

 
$
(11,514
)
 
$
(4,133
)
 
$
(30,532
)
 
$
28,925

 
$
(11,693
)
 
$
(13,300
)
Reclassification out of Accumulated Other Comprehensive Income
Amounts reclassified from Accumulated Other Comprehensive Income (Loss) for the three, six and twelve months ended June 30, 2017 and 2016 are as follows (in thousands):
Details about Accumulated Other Comprehensive Income (Loss) Components
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
Twelve Months Ended June 30,
 
Affected Line Item in the Statement of Operations
 
2017
 
2016
 
2017
 
2016
 
2017
 
2016
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Amortization of pension and post-retirement benefit costs:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Prior service benefit
 
$
2,413

 
$
1,664

 
$
4,829

 
$
3,330

 
$
8,906

 
$
6,579

 
(a)
 
Net loss
 
(1,694
)
 
(1,222
)
 
(3,388
)
 
(2,445
)
 
(5,908
)
 
(6,567
)
 
(a)
 
 
 
 
719

 
442

 
1,441

 
885

 
2,998

 
12

 
(a)
 
Income tax effect
 
(261
)
 
(166
)
 
(454
)
 
(222
)
 
(1,252
)
 
(34
)
 
Income tax benefit
 
 
 
 
458

 
276

 
987

 
663

 
1,746

 
(22
)
 
Net income (loss)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Marketable securities:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Net realized gain on sale of securities
 
5,166

 
2,110

 
7,357

 
3,498

 
11,499

 
11,049

 
Investment and interest income, net
 
 
 
 
5,166

 
2,110

 
7,357

 
3,498

 
11,499

 
11,049

 
Income before income taxes
 
Income tax effect
 
(1,032
)
 
(417
)
 
(1,467
)
 
(692
)
 
(2,209
)
 
(2,168
)
 
Income tax benefit
 
 
 
 
4,134

 
1,693

 
5,890

 
2,806

 
9,290

 
8,881

 
Net income
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Loss on cash flow hedge:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Amortization of loss
 
(132
)
 
(123
)
 
(262
)
 
(245
)
 
(515
)
 
(482
)
 
Interest on long-term debt and revolving credit facility
 
 
 
 
(132
)
 
(123
)
 
(262
)
 
(245
)
 
(515
)
 
(482
)
 
Loss before income taxes
 
Income tax effect
 
47

 
46

 
125

 
128

 
336

 
216

 
Income tax expense
 
 
 
 
(85
)
 
(77
)
 
(137
)
 
(117
)
 
(179
)
 
(266
)
 
Net loss
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Total reclassifications
 
$
4,507

 
$
1,892

 
$
6,740

 
$
3,352

 
$
10,857

 
$
8,593

 
 
 
 
(a) These items are included in the computation of net periodic benefit cost. See Note I, Employee Benefits, for additional information.