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Accumulated Other Comprehensive Income (Loss) (Tables) | 3 Months Ended
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Mar. 31, 2023
Equity [Abstract] |
Summary of Accumulated Other Comprehensive (Loss) | Following is a summary of AOCI(L) for the first quarter of 2023 and the first quarter of 2022:
(in thousands) |  | December 31, 2022 |  | Pre-tax Activity |  | Tax Effect |  | March 31, 2023
Net pension activity: |  |  |  |  |  |  |  |
Actuarial loss |  | $ | (71,140) |  |  | $ | 973 |  |  | $ | (238) |  |  | $ | (70,405) |
Prior service costs |  | (105) |  |  | 4 |  |  | (1) |  |  | (102) |
Net postretirement benefits activity: |  |  |  |  |  |  |  |
Actuarial gain |  | 6,752 |  |  | — |  |  | — |  |  | 6,752 |
Prior service costs |  | (624) |  |  | — |  |  | — |  |  | (624) |
Reclassification of stranded tax effects |  | (19,720) |  |  | — |  |  | — |  |  | (19,720) |
Total AOCI(L) |  | $ | (84,837) |  |  | $ | 977 |  |  | $ | (239) |  |  | $ | (84,099) |
(in thousands) |  | December 31, 2021 |  | Pre-tax Activity |  | Tax Effect |  | April 1, 2022
Net pension activity: |  |  |  |  |  |  |  |
Actuarial loss |  | $ | (78,882) |  |  | $ | 989 |  |  | $ | (243) |  |  | $ | (78,136) |
Prior service credits |  | 11 |  |  | — |  |  | — |  |  | 11 |
Net postretirement benefits activity: |  |  |  |  |  |  |  |
Actuarial loss |  | (1,239) |  |  | 92 |  |  | (23) |  |  | (1,170) |
Prior service costs |  | (624) |  |  | — |  |  | — |  |  | (624) |
Foreign currency translation adjustment |  | (9) |  |  | — |  |  | — |  |  | (9) |
Reclassification of stranded tax effects |  | (19,720) |  |  | — |  |  | — |  |  | (19,720) |
Total AOCI(L) |  | $ | (100,463) |  |  | $ | 1,081 |  |  | $ | (266) |  |  | $ | (99,648) |
Summary of Impact of Accumulated Other Comprehensive Income (Loss) on Statement of Operations | Following is a summary of the impact of AOCI(L) on the condensed consolidated statements of operations:
|  | First Quarter 2023
(in thousands) |  | Net Pension Activity |  | Net Postretirement Benefits Activity |  | Total
Cost of sales |  | $ | 419 |  |  | $ | — |  |  | $ | 419 |
Selling, delivery and administrative expenses |  | 558 |  |  | — |  |  | 558 |
Subtotal pre-tax |  | 977 |  |  | — |  |  | 977 |
Income tax expense |  | 239 |  |  | — |  |  | 239 |
Total after-tax effect |  | $ | 738 |  |  | $ | — |  |  | $ | 738 |
|  | First Quarter 2022
(in thousands) |  | Net Pension Activity |  | Net Postretirement Benefits Activity |  | Total
Cost of sales |  | $ | 278 |  |  | $ | 41 |  |  | $ | 319 |
Selling, delivery and administrative expenses |  | 711 |  |  | 51 |  |  | 762 |
Subtotal pre-tax |  | 989 |  |  | 92 |  |  | 1,081 |
Income tax expense |  | 243 |  |  | 23 |  |  | 266 |
Total after-tax effect |  | $ | 746 |  |  | $ | 69 |  |  | $ | 815 |

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