The following table sets forth the components of other income and other expense for the periods indicated: | | | | | | | | | | | | | | | | | | | | Three Months Ended | | Six Months Ended | | | June 30, | | June 30, | | | 2020 | | 2019 | | 2020 | | 2019 | | | (Thousands of dollars) | Net periodic benefit cost other than service cost | | $ | (1,253 | ) | | $ | (1,469 | ) | | $ | (2,376 | ) | | $ | (3,068 | ) | Earnings (losses) on investments associated with nonqualified employee benefit plans | | 3,947 |
| | 1,050 |
| | (312 | ) | | 3,491 |
| Other, net | | (300 | ) | | (446 | ) | | (706 | ) | | (859 | ) | Total other income (expense), net | | $ | 2,394 |
| | $ | (865 | ) | | $ | (3,394 | ) | | $ | (436 | ) |
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