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Pension and Post-retirement Plans - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items] |  |  |
Employee contribution expense | $ 73,700 | $ 45,000 | $ 43,300
Pension obligations |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Accumulated benefit obligation | $ 90,400 | $ 118,400 |
Discount rate |  | 3.00% |
Future compensation annual rate increase |  | 3.00% |
Expected long-term rate of return on assets | 3.50% |  |
Expected contribution in pension plan | $ 1,500 |  |
Expected benefit payment in 2023 | 3,600 |  |
Expected benefit payment in 2024 | 67,600 |  |
Expected benefit payment in 2025 | 800 |  |
Expected benefit payment in 2026 | 800 |  |
Expected benefit payment in 2027 | 900 |  |
Expected benefit payment from 2028 to 2032 | 5,400 |  |
Benefit obligation | $ 90,443 | $ 120,414 | 126,620
Pension obligations | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Discount rate | 3.70% |  |
Pension obligations | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Discount rate | 4.44% |  |
Pension obligations | Fixed income |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target investment rates | 100.00% |  |
Post-retirement healthcare obligations |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Discount rate | 4.20% | 1.40% |
Expected benefit payment in 2023 | $ 1,700 |  |
Expected benefit payment in 2024 | 2,300 |  |
Expected benefit payment in 2025 | 2,500 |  |
Expected benefit payment in 2026 | 2,500 |  |
Expected benefit payment in 2027 | 2,500 |  |
Expected benefit payment from 2028 to 2032 | 12,500 |  |
Benefit obligation | $ 28,678 | $ 34,816 | 33,478
Post-retirement healthcare obligations | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Discount rate | 4.95% | 2.29% |
Post-retirement healthcare obligations | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Discount rate | 5.10% | 3.10% |
Retirement restoration plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Expected benefit payment in 2023 | $ 200 |  |
Pension expense | 100 | $ 100 | $ 100
Accrued liability | 1,800 | $ 2,300 |
Benefit obligation | $ 1,800 |  |

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- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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- Definition Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(3) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e2919-114920 + Details
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