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Changes in Accumulated Other Comprehensive Loss by Component (Tables) | 12 Months Ended
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Dec. 31, 2020
Changes in Accumulated Other Comprehensive Loss by Component |
Schedule of changes to accumulated other comprehensive loss by component | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 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 gain (loss) before reclassifications | ​ | ​ | (5,047) | ​ | ​ | 133 | ​ | ​ | (4,914)
Amounts reclassified from accumulated other comprehensive loss: (1) | ​ | ​ | 2,462 | ​ | ​ | (229) | ​ | ​ | 2,233
Balance at December 31, 2020 | ​ | $ | (7,608) | ​ | $ | 2,113 | ​ | $ | (5,495)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(1) Amounts reclassified from accumulated other comprehensive loss: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Amortization of Other Postretirement Benefit items: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Actuarial gains (a) | ​ | ​ | (310) | ​ | ​ | ​ | ​ | ​ | ​
Tax expense | ​ | ​ | 81 | ​ | ​ | ​ | ​ | ​ | ​
Reclassification net of tax | ​ | $ | (229) | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Unrealized losses on interest rate swaps reclassified to interest expense | ​ | ​ | 3,327 | ​ | ​ | ​ | ​ | ​ | ​
Tax benefit | ​ | ​ | (865) | ​ | ​ | ​ | ​ | ​ | ​
Reclassification net of tax | ​ | $ | 2,462 | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(a) – These components are included in the computation of benefit plan costs in Note 13.
​ ​ Changes to accumulated other comprehensive loss by component for the year ended December 31, 2019 is 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 (loss) before reclassifications | ​ | ​ | (3,867) | ​ | ​ | 325 | ​ | ​ | (189) | ​ | ​ | (3,731)
Amounts reclassified from accumulated other comprehensive loss: (1) | ​ | ​ | 374 | ​ | ​ | (234) | ​ | ​ | 446 | ​ | ​ | 586
Pension termination | ​ | ​ | - | ​ | ​ | - | ​ | ​ | 6,380 | ​ | ​ | 6,380
Balance at December 31, 2019 | ​ | $ | (5,023) | ​ | $ | 2,209 | ​ | $ | - | ​ | $ | (2,814)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(1) Amounts reclassified from accumulated other comprehensive loss: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Amortization of Other Postretirement Benefit items: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Actuarial gain (a) | ​ | ​ | (312) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Tax expense | ​ | ​ | 78 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Reclassification net of tax | ​ | $ | (234) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Amortization of pension obligation: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Actuarial losses (a) | ​ | ​ | 595 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Tax benefit | ​ | ​ | (149) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Reclassification net of tax | ​ | $ | 446 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Unrealized gains on interest rate swaps reclassified to interest expense | ​ | ​ | 499 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Tax expense | ​ | ​ | (125) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Reclassification net of tax | ​ | $ | 374 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(a) – These components are included in the computation of benefit plan costs in Note 13.

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