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Pension Plan (Tables) | 12 Months Ended
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Dec. 31, 2018
Compensation And Retirement Disclosure [Abstract] |
Reconciliation of Defined Benefit Pension Plan | The following table shows the reconciliation of the defined benefit pension plan as of December 31, 2018 and 2017:
|  | 2018 |  |  | 2017 |
|  | (000s) |
Change in plan assets: |  |  |  |  |  |  |  |
Fair value of plan assets at beginning of year |  | $ | 118,667 |  |  | $ | 109,677 |
Actual return (loss) on plan assets |  |  | (7,522 | ) |  |  | 15,533 |
Benefits paid |  |  | (6,031 | ) |  |  | (5,846 | )
Administrative expenses |  |  | (523 | ) |  |  | (697 | )
Fair value of plan assets at end of year |  | $ | 104,591 |  |  | $ | 118,667 |
Change in benefit obligation: |  |  |  |  |  |  |  |
Benefit obligation at beginning of year |  | $ | 116,056 |  |  | $ | 110,949 |
Service cost |  |  | 689 |  |  |  | 721 |
Interest cost |  |  | 4,063 |  |  |  | 4,465 |
Benefits paid |  |  | (6,031 | ) |  |  | (5,846 | )
Actuarial (gain) loss |  |  | (6,350 | ) |  |  | 5,767 |
Benefit obligation at end of year |  | $ | 108,427 |  |  | $ | 116,056 |
Amounts recognized in the Consolidated Balance Sheet: |  |  |  |  |  |  |  |
Other non-current assets |  |  |  |  |  |  | 2,611 |
Other non-current liabilities |  |  | 3,836 |  |  |  |  |
Total amounts recognized at end of year |  | $ | 3,836 |  |  | $ | 2,611 |
Components of Net Periodic Pension Cost (Benefit) |
|  | 2018 |  |  | 2017 |  |  | 2016 |
|  | (000s) |
Components of net periodic cost (benefit) |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 689 |  |  | $ | 721 |  |  | $ | 926 |
Interest cost |  |  | 4,063 |  |  |  | 4,465 |  |  |  | 4,997 |
Expected return on plan assets |  |  | (5,197 | ) |  |  | (5,862 | ) |  |  | (5,708 | )
Amortization of actuarial loss |  |  | — |  |  |  | 863 |  |  |  | 3,072 |
Net periodic cost |  | $ | (445 | ) |  | $ | 187 |  |  | $ | 3,287 |
Measurement Dates |
|  | 2018 |  | 2017
Measurement Dates |  |  |  |
Benefit obligations |  | 12/31/2018 |  | 12/31/2017
Fair value of plan assets |  | 12/31/2018 |  | 12/31/2017
Weighted-average Assumptions for Net Periodic Benefit Cost |
|  | 2018 |  |  | 2017 |
Weighted average assumptions as of December 31 |  |  |  |  |  |  |  |
Discount rate |  |  | 4.03 | % |  |  | 3.60 | %
Rate of compensation increase |  |  | 4.00 | % |  |  | 4.00 | %
Weighted Average Assumptions |
|  | 2018 |  |  | 2017 |  |  | 2016 |
Weighted-average assumptions for net periodic benefit cost calculations |  |  |  |  |  |  |  |  |  |  |  |
Discount rate |  |  | 3.60 | % |  |  | 4.14 | % |  |  | 4.34 | %
Expected long-term rate of return on plan assets |  |  | 4.50 | % |  |  | 5.50 | % |  |  | 5.50 | %
Rate of compensation increase |  |  | 4.00 | % |  |  | 4.00 | % |  |  | 4.00 | %
Market Values of Our Pension Plan Assets | The market values of our pension plan assets at December 31, 2018 and December 31, 2017, reported using net asset value as a practical expedient, by asset category are as follows:
|  | 2018 |  |  | 2017 |
Equities: |  |  |  |  |  |  |  |
U.S. Large Cap |  | $ | 7,711 |  |  | $ | 9,393 |
U.S. Mid Cap |  |  | 2,309 |  |  |  | 2,937 |
U.S. Small Cap |  |  | 2,094 |  |  |  | 3,005 |
International Developed |  |  | 5,710 |  |  |  | 7,213 |
Emerging Markets |  |  | 4,137 |  |  |  | 4,792 |
Fixed income: |  |  |  |  |  |  |  |
Core Fixed Income |  |  | 24,617 |  |  |  | 25,915 |
Long Duration Fixed Income |  |  | 55,318 |  |  |  | 62,522 |
Real Estate: |  |  |  |  |  |  |  |
REIT Fund |  |  | 2,037 |  |  |  | 2,370 |
Cash/Currency: |  |  |  |  |  |  |  |
Cash Equivalents |  |  | 658 |  |  |  | 520 |
Total market value |  | $ | 104,591 |  |  | $ | 118,667 |
Estimated Future Benefit | There will be benefit payments under this plan beyond 2028.
Estimated Future Benefit Payments (000s) |  |  |  |
2019 |  | $ | 6,595 |
2020 |  |  | 6,744 |
2021 |  |  | 6,834 |
2022 |  |  | 6,891 |
2023 |  |  | 6,921 |
2024-2028 |  |  | 34,270 |
Total |  | $ | 68,255 |
Plan Assets |
|  | 2018 |  |  | 2017 |
Plan Assets |  |  |  |  |  |  |  |
Asset Category |  |  |  |  |  |  |  |
Equity securities |  |  | 21 | % |  |  | 23 | %
Fixed income securities |  |  | 76 | % |  |  | 75 | %
Other |  |  | 3 | % |  |  | 2 | %
Total |  |  | 100 | % |  |  | 100 | %
Asset Allocation Policy and Ranges Established in accordance with Overall Risk and Return Objectives of Portfolio | The following asset allocation policy and ranges have been established in accordance with the overall risk and return objectives of the portfolio:
|  | As of 12/31/2018 |  |  | Permitted Range
Total Equity |  |  | 21 | % |  | 10-30%
Total Fixed Income |  |  | 76 | % |  | 70-90%
Other |  |  | 3 | % |  | 0-10%

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