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Pension Benefits, Other Postretirement Benefits and Employee Savings and Investment Plans (Tables) | 12 Months Ended
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Dec. 31, 2021
Retirement Benefits [Abstract] |
Schedule of Change In Benefit Obligation | The following table summarizes the change in plan assets and changes in benefit obligations:
| Pension Benefits |  | Other Postretirement Benefits
(Dollars in thousands) | 2021 |  | 2020 |  | 2021 |  | 2020
Change in plan assets: |  |  |  |  |  |  |
Fair value of plan assets as of January 1 | $ | 35,296 |  |  | $ | 42,835 |  |  | $ | — |  |  | $ | — |
Actual return on plan assets | (222) |  |  | 3,615 |  |  | — |  |  | — |
Employer contributions | — |  |  | — |  |  | 165 |  |  | 192 |
Benefit payments | (1,612) |  |  | (1,647) |  |  | (165) |  |  | (192) |
Transfer related to plan termination | — |  |  | (9,744) |  |  | — |  |  | — |
Pension settlements | — |  |  | 237 |  |  | — |  |  | — |
Fair value of plan assets as of December 31 | $ | 33,462 |  |  | $ | 35,296 |  |  | $ | — |  |  | $ | — |
Change in plan benefit obligations: |  |  |  |  |  |  |
Fair value of plan benefit obligations as of January 1 | $ | 30,289 |  |  | $ | 30,300 |  |  | $ | 1,503 |  |  | $ | 1,599 |
Service cost | — |  |  | — |  |  | 41 |  |  | 56 |
Interest cost | 732 |  |  | 908 |  |  | 26 |  |  | 40 |
Actuarial (gain) loss | (757) |  |  | 491 |  |  | 39 |  |  | — |
Benefit payments | (1,612) |  |  | (1,647) |  |  | (165) |  |  | (192) |
Pension settlements | — |  |  | 237 |  |  | — |  |  | — |
Fair value of plan benefit obligations as of December 31 | $ | 28,652 |  |  | $ | 30,289 |  |  | $ | 1,444 |  |  | $ | 1,503 |
Amount overfunded (underfunded) | $ | 4,810 |  |  | $ | 5,007 |  |  | $ | (1,444) |  |  | $ | (1,503) |
Schedule of Change in Plan Assets | The following table summarizes the change in plan assets and changes in benefit obligations:
| Pension Benefits |  | Other Postretirement Benefits
(Dollars in thousands) | 2021 |  | 2020 |  | 2021 |  | 2020
Change in plan assets: |  |  |  |  |  |  |
Fair value of plan assets as of January 1 | $ | 35,296 |  |  | $ | 42,835 |  |  | $ | — |  |  | $ | — |
Actual return on plan assets | (222) |  |  | 3,615 |  |  | — |  |  | — |
Employer contributions | — |  |  | — |  |  | 165 |  |  | 192 |
Benefit payments | (1,612) |  |  | (1,647) |  |  | (165) |  |  | (192) |
Transfer related to plan termination | — |  |  | (9,744) |  |  | — |  |  | — |
Pension settlements | — |  |  | 237 |  |  | — |  |  | — |
Fair value of plan assets as of December 31 | $ | 33,462 |  |  | $ | 35,296 |  |  | $ | — |  |  | $ | — |
Change in plan benefit obligations: |  |  |  |  |  |  |
Fair value of plan benefit obligations as of January 1 | $ | 30,289 |  |  | $ | 30,300 |  |  | $ | 1,503 |  |  | $ | 1,599 |
Service cost | — |  |  | — |  |  | 41 |  |  | 56 |
Interest cost | 732 |  |  | 908 |  |  | 26 |  |  | 40 |
Actuarial (gain) loss | (757) |  |  | 491 |  |  | 39 |  |  | — |
Benefit payments | (1,612) |  |  | (1,647) |  |  | (165) |  |  | (192) |
Pension settlements | — |  |  | 237 |  |  | — |  |  | — |
Fair value of plan benefit obligations as of December 31 | $ | 28,652 |  |  | $ | 30,289 |  |  | $ | 1,444 |  |  | $ | 1,503 |
Amount overfunded (underfunded) | $ | 4,810 |  |  | $ | 5,007 |  |  | $ | (1,444) |  |  | $ | (1,503) |
Schedule Of Amounts Recognized In Consolidated Balance Sheet | Our pension-related balances reflected in the consolidated statements of financial position consisted of the following:
| Pension Benefits |  | Other Postretirement Benefits
| As of December 31, |  | As of December 31,
(Dollars in thousands) | 2021 |  | 2020 |  | 2021 |  | 2020
Assets & Liabilities: |  |  |  |  |  |  |
Non-current assets | $ | 5,123 |  |  | $ | 5,278 |  |  | $ | — |  |  | $ | — |
Current liabilities | (3) |  |  | (14) |  |  | (136) |  |  | (148) |
Non-current liabilities | (310) |  |  | (257) |  |  | (1,308) |  |  | (1,355) |
Net assets (liabilities) | $ | 4,810 |  |  | $ | 5,007 |  |  | $ | (1,444) |  |  | $ | (1,503) |
Accumulated Other Comprehensive Loss: |  |  |  |  |  |  |
Net actuarial (loss) gain | $ | (11,807) |  |  | $ | (11,171) |  |  | $ | 80 |  |  | $ | 119 |
Prior service benefit | — |  |  | — |  |  | — |  |  | 97 |
Accumulated other comprehensive (loss) income | $ | (11,807) |  |  | $ | (11,171) |  |  | $ | 80 |  |  | $ | 216 |
Schedule Of Net Periodic Benefit Cost Not Yet Recognized | Our pension-related balances reflected in the consolidated statements of financial position consisted of the following:
| Pension Benefits |  | Other Postretirement Benefits
| As of December 31, |  | As of December 31,
(Dollars in thousands) | 2021 |  | 2020 |  | 2021 |  | 2020
Assets & Liabilities: |  |  |  |  |  |  |
Non-current assets | $ | 5,123 |  |  | $ | 5,278 |  |  | $ | — |  |  | $ | — |
Current liabilities | (3) |  |  | (14) |  |  | (136) |  |  | (148) |
Non-current liabilities | (310) |  |  | (257) |  |  | (1,308) |  |  | (1,355) |
Net assets (liabilities) | $ | 4,810 |  |  | $ | 5,007 |  |  | $ | (1,444) |  |  | $ | (1,503) |
Accumulated Other Comprehensive Loss: |  |  |  |  |  |  |
Net actuarial (loss) gain | $ | (11,807) |  |  | $ | (11,171) |  |  | $ | 80 |  |  | $ | 119 |
Prior service benefit | — |  |  | — |  |  | — |  |  | 97 |
Accumulated other comprehensive (loss) income | $ | (11,807) |  |  | $ | (11,171) |  |  | $ | 80 |  |  | $ | 216 |
Schedule of Components of Net Periodic Benefit Cost | The components of net periodic benefit cost (credit) were as follows:
| Pension Benefits |  | Other Postretirement Benefits
| Years Ended December 31, |  | Years Ended December 31,
(Dollars in thousands) | 2021 |  | 2020 |  | 2019 |  | 2021 |  | 2020 |  | 2019
Service cost | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 41 |  |  | $ | 56 |  |  | $ | 61 |
Interest cost | 732 |  |  | 908 |  |  | 5,641 |  |  | 26 |  |  | 40 |  |  | 59 |
Expected return of plan assets | (1,558) |  |  | (1,574) |  |  | (6,932) |  |  | — |  |  | — |  |  | — |
Amortization of prior service credit | — |  |  | — |  |  | — |  |  | (97) |  |  | (112) |  |  | (1,011) |
Amortization of net loss (gain) | 387 |  |  | 427 |  |  | 1,514 |  |  | — |  |  | — |  |  | — |
Settlement charge | — |  |  | (63) |  |  | 53,213 |  |  | — |  |  | — |  |  | — |
Net periodic benefit cost (credit) | $ | (439) |  |  | $ | (302) |  |  | $ | 53,436 |  |  | $ | (30) |  |  | $ | (16) |  |  | $ | (891) |
Schedule of Weighted-Average Assumptions Used |
| Pension Benefits |  | Other Postretirement Benefits
| 2021 |  | 2020 |  | 2021 |  | 2020
Weighted average assumptions used in benefit obligations: |  |  |  |  |  |  |
Discount rate | 2.75 | % |  | 2.50 | % |  | 2.25 | % |  | 1.75 | %
Weighted average assumptions used in net periodic benefit costs: |  |  |  |  |  |  |
Discount rate | 2.50 | % |  | 3.25 | % |  | 1.75 | % |  | 2.75 | %
Expected long-term rate of return on assets | 4.53 | % |  | 4.53 | % |  | — | % |  | — | %
Schedule of Allocation Of Plan Assets | The following table presents the fair value of the pension plan net assets by asset category and level, within the fair value hierarchy, as of December 31, 2021 and 2020:
| Fair Value of Plan Assets as of December 31, 2021
(Dollars in thousands) | Level 1 |  | Level 2 |  | Level 3 |  | Total
Fixed income bonds | $ | — |  |  | $ | 28,392 |  |  | $ | — |  |  | $ | 28,392 |
Mutual funds | 3,400 |  |  | — |  |  | — |  |  | 3,400 |
Pooled separate accounts | — |  |  | 380 |  |  | — |  |  | 380 |
Guaranteed deposit account | — |  |  | — |  |  | 1,290 |  |  | 1,290 |
Total plan assets at fair value | $ | 3,400 |  |  | $ | 28,772 |  |  | $ | 1,290 |  |  | $ | 33,462 |
| Fair Value of Plan Assets as of December 31, 2020
(Dollars in thousands) | Level 1 |  | Level 2 |  | Level 3 |  | Total
Fixed income bonds | $ | — |  |  | $ | 29,896 |  |  | $ | — |  |  | $ | 29,896 |
Mutual funds | 3,535 |  |  | — |  |  | — |  |  | 3,535 |
Pooled separate accounts | — |  |  | 518 |  |  | — |  |  | 518 |
Guaranteed deposit account | — |  |  | — |  |  | 1,347 |  |  | 1,347 |
Total plan assets at fair value | $ | 3,535 |  |  | $ | 30,414 |  |  | $ | 1,347 |  |  | $ | 35,296 |
Schedule of Changes in Fair Value of Level 3 Assets | The following table presents a summary of changes in the fair value of the guaranteed deposit account’s Level 3 assets for the year ended December 31, 2021:
| Guaranteed Deposit Account
Balance as of December 31, 2020 | $ | 1,347 |
Change in unrealized gain (loss) | (24) |
Purchases, sales, issuances and settlements (net) | (33) |
Balance as of December 31, 2021 | $ | 1,290 |
Schedule of Future Benefit Payments | The following table sets forth the expected benefit payments to be paid for the pension plans and the other postretirement benefit plans:
| Pension Benefits |  | Other Postretirement Benefits
2022 | $ | 1,774 |  |  | $ | 136 |
2023 | $ | 1,778 |  |  | $ | 153 |
2024 | $ | 1,779 |  |  | $ | 145 |
2025 | $ | 1,822 |  |  | $ | 157 |
2026 | $ | 1,761 |  |  | $ | 172 |
2027-2031 | $ | 8,401 |  |  | $ | 677 |

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