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Components of Accumulated Other Comprehensive Income (Tables) | 3 Months Ended
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Mar. 31, 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 March 31, |
(in thousands) |  | 2024 |  |  | 2023 |
Pension and Other Postretirement Employee Benefits |  |  |  |  |  |
Balance at beginning of period |  | $ | (18,925 | ) |  | $ | (28,494 | )
Unrecognized losses arising in AOCI during the period: |  |  |  |  |  |
Gross |  |  | — |  |  |  | — |
Tax effect |  |  | — |  |  |  | — |
Reclassifications from AOCI to earnings: |  |  |  |  |  |
Other 1 |  |  | (306 | ) |  |  | (176 | )
Tax effect |  |  | 77 |  |  |  | 45 |
Net of tax amount |  |  | (229 | ) |  |  | (131 | )
Balance at end of period |  |  | (19,154 | ) |  |  | (28,625 | )
Cash Flow Hedges |  |  |  |  |  |
Balance at beginning of period |  |  | 121,957 |  |  |  | 126,146 |
Unrecognized gains (losses) arising in AOCI during the period: |  |  |  |  |  |
Gross |  |  | 21,872 |  |  |  | (13,881 | )
Tax effect |  |  | (352 | ) |  |  | 290 |
Reclassifications from AOCI to earnings: |  |  |  |  |  |
Gross 2 |  |  | (5,719 | ) |  |  | (3,837 | )
Tax effect |  |  | 124 |  |  |  | 93 |
Net of tax amount |  |  | 15,925 |  |  |  | (17,335 | )
Balance at end of period |  |  | 137,882 |  |  |  | 108,811 |
Accumulated other comprehensive income, end of period |  | $ | 118,728 |  |  | $ | 80,186 |
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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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-14A Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481674/830-30-50-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481694/830-30-45-20 + Details
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