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Pension Benefit Plan | 6 Months Ended
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Jun. 30, 2020
Compensation And Retirement Disclosure [Abstract] |
Pension Benefit Plan | 5. PENSION BENEFIT PLAN The following table summarizes the components of net periodic pension cost related to a defined benefit pension plan covering employees in certain foreign countries for the three and six months ended June 30, 2020 and 2019:
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
(In thousands) |  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Service cost |  | $ | 307 |  |  | $ | 368 |  |  | $ | 617 |  |  | $ | 743 |
Interest cost |  |  | 108 |  |  |  | 159 |  |  |  | 216 |  |  |  | 321 |
Expected return on plan assets |  |  | (407 | ) |  |  | (348 | ) |  |  | (817 | ) |  |  | (703 | )
Amortization of actuarial losses |  |  | 235 |  |  |  | 199 |  |  |  | 472 |  |  |  | 402 |
Net periodic pension cost |  | $ | 243 |  |  | $ | 378 |  |  | $ | 488 |  |  | $ | 763 |
The components of net periodic pension cost, other than the service cost component, are included in other income (expense), net in the Condensed Consolidated Statements of Income (Loss). Service cost is included in cost of sales, selling, general and administrative expenses and research and development expenses in the Condensed Consolidated Statements of Income (Loss).

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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