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Components of Accumulated Other Comprehensive Income (Tables) | 9 Months Ended
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Sep. 30, 2024
Equity [Abstract] |
Changes in Accumulated Other Comprehensive Income | The following table details changes in amounts included in our Accumulated Other Comprehensive Income (AOCI) by component on our Condensed Consolidated Balance Sheets, net of tax:
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
(in thousands) |  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Pension and Other Postretirement Employee Benefits |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  | $ | (19,384 | ) |  | $ | (28,969 | ) |  | $ | (18,925 | ) |  | $ | (28,494 | )
Reclassifications from AOCI to earnings: |  |  |  |  |  |  |  |  |  |  |  |
Other 1 |  |  | (307 | ) |  |  | (177 | ) |  |  | (918 | ) |  |  | (529 | )
Tax effect |  |  | 77 |  |  |  | 45 |  |  |  | 229 |  |  |  | 133 |
Net of tax amount |  |  | (230 | ) |  |  | (132 | ) |  |  | (689 | ) |  |  | (396 | )
Other reclassifications |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (211 | )
Balance at end of period |  |  | (19,614 | ) |  |  | (29,101 | ) |  |  | (19,614 | ) |  |  | (29,101 | )
Cash Flow Hedges |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  |  | 141,493 |  |  |  | 126,530 |  |  |  | 121,957 |  |  |  | 126,146 |
Unrecognized gains (losses) arising in AOCI during the period: |  |  |  |  |  |  |  |  |  |  |  |
Gross |  |  | (23,502 | ) |  |  | 34,334 |  |  |  | 7,695 |  |  |  | 43,207 |
Tax effect |  |  | 372 |  |  |  | (727 | ) |  |  | (121 | ) |  |  | (899 | )
Reclassifications from AOCI to earnings: |  |  |  |  |  |  |  |  |  |  |  |
Gross 2 |  |  | (5,708 | ) |  |  | (5,266 | ) |  |  | (17,124 | ) |  |  | (13,829 | )
Tax effect |  |  | 125 |  |  |  | 123 |  |  |  | 373 |  |  |  | 324 |
Net of tax amount |  |  | (28,713 | ) |  |  | 28,464 |  |  |  | (9,177 | ) |  |  | 28,803 |
Other reclassifications |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 45 |
Balance at end of period |  |  | 112,780 |  |  |  | 154,994 |  |  |  | 112,780 |  |  |  | 154,994 |
Accumulated other comprehensive income, end of period |  | $ | 93,166 |  |  | $ | 125,893 |  |  | $ | 93,166 |  |  | $ | 125,893 |
1 Included in the computation of net periodic pension costs. 2 Included in Interest expense, net on the Condensed Consolidated Statement of Operations.

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