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Accumulated other comprehensive loss (Tables) | 9 Months Ended
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Sep. 30, 2022
Equity [Abstract] |
Schedule of Accumulated Other Comprehensive Loss | The following table summarizes the components of, and the changes in, Accumulated Other Comprehensive Loss (AOCL), net of tax (in thousands):
| Retirement Plans |  | Foreign Currency Translation |  | Available-For-Sale Investment |  | Total
Quarters ended: |  |  |  |  |  |  |
Balance at June 30, 2022 | $ | (111,560) |  |  | $ | 532 |  |  | $ | — |  |  | $ | (111,028) |
Amounts reclassified from AOCL | 766 |  |  | — |  |  | — |  |  | 766 |
Total other comprehensive income | 766 |  |  | — |  |  | — |  |  | 766 |
Balance at Sept. 30, 2022 | $ | (110,794) |  |  | $ | 532 |  |  | $ | — |  |  | $ | (110,262) |
Balance at June 30, 2021 | $ | (119,065) |  |  | $ | 461 |  |  | $ | — |  |  | $ | (118,604) |
Other comprehensive loss before reclassifications | — |  |  | (39) |  |  | 40,293 |  |  | 40,254 |
Amounts reclassified from AOCL | 1,657 |  |  | — |  |  | — |  |  | 1,657 |
Total other comprehensive income | 1,657 |  |  | (39) |  |  | 40,293 |  |  | 41,911 |
Balance at Sept. 30, 2021 | $ | (117,408) |  |  | $ | 422 |  |  | $ | 40,293 |  |  | $ | (76,693) |
| Retirement Plans |  | Foreign Currency Translation |  | Available-For-Sale Investment |  | Total
Nine months ended: |  |  |  |  |  |  |
Balance at Dec. 31, 2021 | $ | (113,090) |  |  | $ | 455 |  |  | $ | 15,419 |  |  | $ | (97,216) |
Other comprehensive income before reclassifications | — |  |  | 77 |  |  | — |  |  | 77 |
Amounts reclassified from AOCL | 2,296 |  |  | — |  |  | (15,419) |  |  | (13,123) |
Total other comprehensive income (loss) | 2,296 |  |  | 77 |  |  | (15,419) |  |  | (13,046) |
Balance at Sept. 30, 2022 | $ | (110,794) |  |  | $ | 532 |  |  | $ | — |  |  | $ | (110,262) |
Balance at Dec. 31, 2020 | $ | (120,979) |  |  | $ | (97) |  |  | $ | — |  |  | $ | (121,076) |
Other comprehensive income before reclassifications | — |  |  | 519 |  |  | 40,293 |  |  | 40,812 |
Amounts reclassified from AOCL | 3,571 |  |  | — |  |  | — |  |  | 3,571 |
Total other comprehensive income | 3,571 |  |  | 519 |  |  | 40,293 |  |  | 44,383 |
Balance at Sept. 30, 2021 | $ | (117,408) |  |  | $ | 422 |  |  | $ | 40,293 |  |  | $ | (76,693) |
Schedule of Reclassification out of Accumulated Other Comprehensive Loss | Amounts reclassified out of AOCL are summarized below (in thousands):
| Quarter ended Sept. 30, |  | Nine months ended Sept. 30, |
| 2022 |  | 2021 |  | 2022 |  | 2021 |
Amortization of prior service credit, net | $ | (106) |  |  | $ | (120) |  |  | $ | (354) |  |  | $ | (361) |  |
Amortization of actuarial loss | 1,137 |  |  | 1,410 |  |  | 3,446 |  |  | 4,230 |  |
Pension payment timing related charge | — |  |  | 946 |  |  | — |  |  | 946 |  |
Realized gain on available-for-sale investment | — |  |  | — |  |  | (20,800) |  |  | — |  |
Total reclassifications, before tax | 1,031 |  |  | 2,236 |  |  | (17,708) |  |  | 4,815 |  |
Income tax effect | (265) |  |  | (579) |  |  | 4,585 |  |  | (1,244) |  |
Total reclassifications, net of tax | $ | 766 |  |  | $ | 1,657 |  |  | $ | (13,123) |  |  | $ | 3,571 |  |

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