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Retirement Plans (Tables) | 9 Months Ended
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Sep. 30, 2019
Retirement Benefits [Abstract] |
Components Of Net Periodic Pension Cost | The components of net periodic pension cost (income) of the UK Plan for the three and nine months ended September 30, 2019 and 2018 were as follows (in thousands):
| For the three months ended September 30, |  | For the nine months ended September 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
Interest cost | $ | 1,925 |  |  | $ | 1,959 |  |  | $ | 5,968 |  |  | $ | 6,103 |
Expected return on plan assets | (2,941 | ) |  | (3,344 | ) |  | (9,121 | ) |  | (10,415 | )
Amortization of unrecognized loss | 566 |  |  | 638 |  |  | 1,756 |  |  | 1,985 |
Net periodic pension cost (income) | $ | (450 | ) |  | $ | (747 | ) |  | $ | (1,397 | ) |  | $ | (2,327 | )

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + 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 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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