Schedule of Net Benefit Costs |
The components of net periodic benefit cost for the Defined Benefit Pension Plan were as follows (in thousands): | | | | | | | | | | | | | | | | Three Months Ended June 30, | | Six Months Ended June 30, | | 2019 | 2018 | | 2019 | 2018 | Service cost | $ | 1,345 |
| $ | 1,709 |
| | $ | 2,691 |
| $ | 3,417 |
| Interest cost | 4,344 |
| 3,868 |
| | 8,687 |
| 7,735 |
| Expected return on plan assets | (6,100 | ) | (6,185 | ) | | (12,200 | ) | (12,370 | ) | Prior service cost | 7 |
| 14 |
| | 13 |
| 29 |
| Net loss (gain) | 940 |
| 2,157 |
| | 1,881 |
| 4,315 |
| Net periodic benefit cost | $ | 536 |
| $ | 1,563 |
| | $ | 1,072 |
| $ | 3,126 |
|
Defined Benefit Postretirement Healthcare Plans
The components of net periodic benefit cost for the Defined Benefit Postretirement Healthcare Plans were as follows (in thousands): | | | | | | | | | | | | | | | | Three Months Ended June 30, | | Six Months Ended June 30, | | 2019 | 2018 | | 2019 | 2018 | Service cost | $ | 454 |
| $ | 572 |
| | $ | 908 |
| $ | 1,145 |
| Interest cost | 563 |
| 521 |
| | 1,123 |
| 1,042 |
| Expected return on plan assets | (58 | ) | (56 | ) | | (115 | ) | (113 | ) | Prior service cost (benefit) | (100 | ) | (99 | ) | | (199 | ) | (198 | ) | Net loss (gain) | — |
| 54 |
| | — |
| 108 |
| Net periodic benefit cost | $ | 859 |
| $ | 992 |
| | $ | 1,717 |
| $ | 1,984 |
|
Supplemental Non-qualified Defined Benefit and Defined Contribution Plans
The components of net periodic benefit cost for the Supplemental Non-qualified Defined Benefit and Defined Contribution Plans were as follows (in thousands): | | | | | | | | | | | | | | | | Three Months Ended June 30, | | Six Months Ended June 30, | | 2019 | 2018 | | 2019 | 2018 | Service cost | $ | 692 |
| $ | 435 |
| | $ | 1,977 |
| $ | 715 |
| Interest cost | 324 |
| 292 |
| | 648 |
| 585 |
| Prior service cost | 1 |
| 1 |
| | 1 |
| 1 |
| Net loss (gain) | 134 |
| 250 |
| | 268 |
| 500 |
| Net periodic benefit cost | $ | 1,151 |
| $ | 978 |
| | $ | 2,894 |
| $ | 1,801 |
|
|
Schedule of Defined Benefit Plans Contributions |
Contributions made in 2019 and anticipated contributions for 2019 and 2020 are as follows (in thousands): | | | | | | | | | | | | | | | Contributions Made | Contributions Made | Additional Contributions | Contributions | | Three Months Ended June 30, 2019 | Six Months Ended June 30, 2019 | Anticipated for 2019 | Anticipated for 2020 | Defined Benefit Pension Plan | $ | — |
| $ | — |
| $ | 12,700 |
| $ | 12,700 |
| Non-pension Defined Benefit Postretirement Healthcare Plans | $ | 1,108 |
| $ | 2,217 |
| $ | 2,217 |
| $ | 4,271 |
| Supplemental Non-qualified Defined Benefit and Defined Contribution Plans | $ | 366 |
| $ | 732 |
| $ | 732 |
| $ | 1,562 |
|
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