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Changes in Accumulated Other Comprehensive Loss by Component (Tables) | 6 Months Ended
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Jun. 30, 2020
Changes in Accumulated Other Comprehensive Loss by Component |
Schedule of changes to accumulated other comprehensive loss by component | Changes to accumulated other comprehensive loss by component for the six months ended June 30, 2020 are as follows: ​ ​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Unrealized | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Net Loss | ​ | ​ | Retiree | ​ | ​ | ​ | ​
​ | ​ | on Interest | ​ | ​ | Health | ​ | ​ | ​ | ​
​ | ​ | Rate | ​ | ​ | Benefit | ​ | ​ | ​ | ​
​ | ​ | Swap | ​ | ​ | Obligation | ​ | ​ | Total
Balance at December 31, 2019 | ​ | $ | (5,023) | ​ | $ | 2,209 | ​ | ​ | $ | (2,814)
Other comprehensive loss before reclassifications | ​ | ​ | (4,612) | ​ | ​ | — | ​ | ​ | ​ | (4,612)
Amounts reclassified from accumulated other comprehensive loss: (1) | ​ | ​ | 914 | ​ | ​ | (114) | ​ | ​ | ​ | 800
Balance at June 30, 2020 | ​ | $ | (8,721) | ​ | $ | 2,095 | ​ | ​ | $ | (6,626)
(1) Amounts reclassified from accumulated other comprehensive loss: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Amortization of Other Postretirement Benefit items: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Actuarial gains (a) | ​ | $ | (154) | ​ | ​ | ​ | ​ | ​ | ​ | ​
Tax expense | ​ | ​ | 40 | ​ | ​ | ​ | ​ | ​ | ​ | ​
Reclassification net of tax | ​ | $ | (114) | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Realized losses on interest rate swaps reclassified to interest expense | ​ | $ | 1,235 | ​ | ​ | ​ | ​ | ​ | ​ | ​
Tax benefit | ​ | ​ | (321) | ​ | ​ | ​ | ​ | ​ | ​ | ​
Reclassification net of tax | ​ | $ | 914 | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(a) These components are included in the computation of benefit plan costs in Note 12.
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ ​ ​ Changes to accumulated other comprehensive loss by component for the six months ended June 30, 2019 are as follows: ​ ​ ​ ​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Unrealized | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Net Loss | ​ | ​ | Retiree | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | on Interest | ​ | ​ | Health | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Rate | ​ | ​ | Benefit | ​ | Pension | ​ | ​ | ​
​ | ​ | Swap | ​ | ​ | Obligation | ​ | Obligation | ​ | Total
Balance at December 31, 2018 | ​ | $ | (1,530) | ​ | $ | 2,118 | ​ | $ | (6,637) | ​ | $ | (6,049)
Other comprehensive gain before reclassifications | ​ | ​ | (3,596) | ​ | ​ | - | ​ | ​ | - | ​ | ​ | (3,596)
Amounts reclassified from accumulated other comprehensive loss: (1) | ​ | ​ | 70 | ​ | ​ | (115) | ​ | ​ | 220 | ​ | ​ | 175
Balance at June 30, 2019 | ​ | $ | (5,056) | ​ | $ | 2,003 | ​ | $ | (6,417) | ​ | $ | (9,470)
(1) Amounts reclassified from accumulated other comprehensive loss: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Amortization of Other Postretirement Benefit items: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Actuarial gains (a) | ​ | $ | (156) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Tax expense | ​ | ​ | 41 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Reclassification net of tax | ​ | $ | (115) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Amortization of pension items: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Actuarial losses (a) | ​ | $ | 298 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Tax benefit | ​ | ​ | (78) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Reclassification net of tax | ​ | $ | 220 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Realized losses on interest rate swaps reclassified to interest expense | ​ | $ | 95 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Tax benefit | ​ | ​ | (25) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Reclassification net of tax | ​ | $ | 70 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
| (a) | These components are included in the computation of benefit plan costs in Note 12.

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580 + Details
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