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Defined Benefit Pension Plans | 9 Months Ended
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Sep. 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 nine months ended September 30, 2020 and 2019 included the following components:
|  | Three Months Ended |  |  | Nine Months Ended |
(in thousands) |  | September 30, 2020 |  |  | September 30, 2019 |  |  | September 30, 2020 |  |  | September 30, 2019 |
Service cost |  | $ | 315 |  |  | $ | 332 |  |  | $ | 946 |  |  | $ | 1,004 |
Interest cost |  |  | 4,092 |  |  |  | 5,565 |  |  |  | 12,330 |  |  |  | 16,763 |
Expected return on assets |  |  | (6,936 | ) |  |  | (7,371 | ) |  |  | (20,899 | ) |  |  | (22,214 | )
Amortization of actuarial loss |  |  | 2,614 |  |  |  | 2,689 |  |  |  | 7,848 |  |  |  | 8,073 |
Net periodic cost |  | $ | 85 |  |  | $ | 1,215 |  |  | $ | 225 |  |  | $ | 3,626 |
For the three months ended September 30, 2020 and 2019, the non-service components of net periodic pension (benefit) cost of $(230,000) and $883,000, respectively, are included in "Other (Expense) Income, net" on the unaudited Condensed Consolidated Statement of Operations. For the nine months ended September 30, 2020 and 2019, the non-service components of net periodic pension (benefit) cost of $(721,000) and $2,622,000, respectively, are included in "Other (Expense) Income, net" on the unaudited Condensed Consolidated Statement of Operations. For the nine months ended September 30, 2020, the Company made contributions of $3,000,000 and $455,000 to the U.S. and U.K. defined benefit pension plans, respectively, compared with no contributions to the U.S. defined benefit plan and $527,000 to the U.K. defined benefit pension plans during the nine months ended September 30, 2019. The Company has made an additional contribution of $6,000,000 to its U.S. plan during the fourth quarter of 2020 but does not expect to make additional contributions to its U.K. plans during the remainder of 2020.

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