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Accumulated Other Comprehensive Income (Notes)
 3 Months Ended
Mar. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Comprehensive Income (Loss) Note 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 March 31, 2020
 
Three Months Ended March 31, 2019
 
 
 
Unrecognized Pension and Post-retirement Benefit Costs
 
Net Unrealized Gains (Losses) on Debt Securities
 
Net Losses on Cash Flow Hedges
 
Accumulated Other Comprehensive Income (Loss)
 
Unrecognized Pension and Post-retirement Benefit Costs
 
Net Unrealized Gains (Losses) on Debt Securities
 
Net Losses on Cash Flow Hedges
 
Accumulated Other Comprehensive Income (Loss)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Balance at beginning of period as previously reported
$
(38,491
)
 
$
—

 
$
(10,461
)
 
$
(48,952
)
 
$
(24,923
)
 
$
(2,942
)
 
$
(10,919
)
 
$
(38,784
)
 
Other comprehensive income before reclassifications
—

 
—

 
—

 
—

 
—

 
1,973

 
—

 
1,973

 
Amounts reclassified from accumulated other comprehensive income (loss)
(153
)
 
—

 
128

 
(25
)
 
(1,078
)
 
662

 
100

 
(316
)
Balance at end of period
$
(38,644
)
 
$
—

 
$
(10,333
)
 
$
(48,977
)
 
$
(26,001
)
 
$
(307
)
 
$
(10,819
)
 
$
(37,127
)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Twelve Months Ended March 31, 2020
 
Twelve Months Ended March 31, 2019
 
 
 
Unrecognized Pension and Post-retirement Benefit Costs
 
Net Unrealized Gains (Losses) on Debt Securities
 
Net Losses on Cash Flow Hedges
 
Accumulated Other Comprehensive Income (Loss)
 
Unrecognized Pension and Post-retirement Benefit Costs
 
Net Unrealized Gains (Losses) on Debt Securities
 
Net Losses on Cash Flow Hedges
 
Accumulated Other Comprehensive Income (Loss)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Balance at beginning of period as previously reported
$
(26,001
)
 
$
(307
)
 
$
(10,819
)
 
$
(37,127
)
 
$
(18,475
)
 
$
(2,593
)
 
$
(11,253
)
 
$
(32,321
)
 
Other comprehensive income before reclassifications
(9,424
)
 
2,682

 
—

 
(6,742
)
 
(4,589
)
 
892

 
—

 
(3,697
)
 
Amounts reclassified from accumulated other comprehensive income (loss)
(3,219
)
 
(2,375
)
 
486

 
(5,108
)
 
(2,937
)
 
1,394

 
434

 
(1,109
)
Balance at end of period
$
(38,644
)
 
$
—

 
$
(10,333
)
 
$
(48,977
)
 
$
(26,001
)
 
$
(307
)
 
$
(10,819
)
 
$
(37,127
)


Amounts reclassified from Accumulated Other Comprehensive Income (Loss) for the three and twelve months ended March 31, 2020 and 2019 are as follows (in thousands):
Details about Accumulated Other Comprehensive Income (Loss) Components
 
Three Months Ended March 31,
 
Twelve Months Ended March 31,
 
Affected Line Item in the Statements of Operations
 
2020
 
2019
 
2020
 
2019
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Amortization of pension and post-retirement benefit costs:
 
 
 
 
 
 
 
 
 
 
 
Prior service benefit
 
$
1,651

 
$
2,186

 
$
8,205

 
$
9,427

 
Miscellaneous non-operating income
 
Net loss
 
(1,445
)
 
(843
)
 
(4,017
)
 
(5,655
)
 
Miscellaneous non-operating deductions
 
 
 
 
206

 
1,343

 
4,188

 
3,772

 
Income (loss) before income taxes
 
Income tax effect
 
(53
)
 
(265
)
 
(969
)
 
(835
)
 
Income tax expense (benefit)
 
 
 
 
153

 
1,078

 
3,219

 
2,937

 
Net income (loss)
 
 
 
 
 
 
 
 
 
 
 
 
 
Marketable securities:
 
 
 
 
 
 
 
 
 
 
 
Net realized gain (loss) on sale of securities
 
—

 
(829
)
 
3,061

 
(1,756
)
 
Investment and interest income, net
 
 
 
 
—

 
(829
)
 
3,061

 
(1,756
)
 
Income (loss) before income taxes
 
Income tax effect
 
—

 
167

 
(686
)
 
362

 
Income tax expense (benefit)
 
 
 
 
—

 
(662
)
 
2,375

 
(1,394
)
 
Net income (loss)
 
 
 
 
 
 
 
 
 
 
 
 
 
Loss on cash flow hedge:
 
 
 
 
 
 
 
 
 
 
 
Amortization of loss
 
(158
)
 
(148
)
 
(615
)
 
(577
)
 
Interest on long-term debt and revolving credit facility
 
 
 
 
(158
)
 
(148
)
 
(615
)
 
(577
)
 
Income (loss) before income taxes
 
Income tax effect
 
30

 
48

 
129

 
143

 
Income tax expense (benefit)
 
 
 
 
(128
)
 
(100
)
 
(486
)
 
(434
)
 
Net income (loss)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Total reclassifications
 
$
25

 
$
316

 
$
5,108

 
$
1,109