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Pension Benefit Plan (Tables) | 6 Months Ended
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Jun. 30, 2019
Compensation And Retirement Disclosure [Abstract] |
Summarization of Components of Net Periodic Pension Cost | The following table summarizes the components of net periodic pension cost for the three and six months ended June 30, 2019 and 2018:
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
(In thousands) |  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Service cost |  | $ | 368 |  |  | $ | 303 |  |  | $ | 743 |  |  | $ | 611 |
Interest cost |  |  | 159 |  |  |  | 185 |  |  |  | 321 |  |  |  | 372 |
Expected return on plan assets |  |  | (348 | ) |  |  | (394 | ) |  |  | (703 | ) |  |  | (793 | )
Amortization of actuarial losses |  |  | 199 |  |  |  | 63 |  |  |  | 402 |  |  |  | 127 |
Net periodic pension cost |  | $ | 378 |  |  | $ | 157 |  |  | $ | 763 |  |  | $ | 317 |

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- Definition Tabular disclosure of the costs related to the various types of retirement plans including defined benefit pension plan cost, defined contribution plan cost, other postretirement benefit plan cost, and net periodic benefit cost. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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