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Defined Benefit Pension Plans | 6 Months Ended
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Jun. 30, 2020
Compensation And Retirement Disclosure [Abstract] |
Defined Benefit Pension Plans | 6. Defined Benefit Pension Plans Net periodic cost related to all of the Company's defined benefit pension plans recognized in the Company's unaudited Condensed Consolidated Statements of Operations for the three and six months ended June 30, 2020 and 2019 included the following components:
|  | Three Months Ended |  |  | Six Months Ended |
(in thousands) |  | June 30, 2020 |  |  | June 30, 2019 |  |  | June 30, 2020 |  |  | June 30, 2019 |
Service cost |  | $ | 311 |  |  | $ | 356 |  |  | $ | 631 |  |  | $ | 672 |
Interest cost |  |  | 4,097 |  |  |  | 5,614 |  |  |  | 8,238 |  |  |  | 11,198 |
Expected return on assets |  |  | (6,945 | ) |  |  | (7,372 | ) |  |  | (13,963 | ) |  |  | (14,843 | )
Amortization of actuarial loss |  |  | 2,614 |  |  |  | 2,662 |  |  |  | 5,234 |  |  |  | 5,384 |
Net periodic cost |  | $ | 77 |  |  | $ | 1,260 |  |  | $ | 140 |  |  | $ | 2,411 |
For the three months ended June 30, 2020 and 2019, the non-service components of net periodic pension (benefit) cost of $(234,000) and $904,000, respectively, are included in "Other (Expense) Income, net" on the unaudited Condensed Consolidated Statement of Operations. For the six months ended June 30, 2020 and 2019, the non-service components of net periodic pension (benefit) cost of $(491,000) and $1,739,000, respectively, are included in "Other (Expense) Income, net" on the unaudited Condensed Consolidated Statement of Operations. For the six months ended June 30, 2020, the Company made contributions of $3,000,000 and $288,000 to the U.S. and U.K. defined benefit pension plans, respectively, compared with no contributions to the U.S. defined benefit plan and $345,000 to the U.K. defined benefit pension plans during the six months ended June 30, 2019. The Company is evaluating whether to make additional contributions to its U.S. plan during the remainder of 2020 and is not expecting to make additional contributions to its U.K. plans.

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