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Retirement Benefits (Tables) | 9 Months Ended
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Sep. 30, 2018
Postemployment Benefits [Abstract] |
Schedule of net periodic benefit expense (income) | The components of net periodic benefit expense related to the non-contributory, defined benefit pension plan for the three and nine month periods ended September 30 were as follows:
|  | Three Months Ended September 30, |  | Nine Months Ended September 30
In thousands |  | 2018 |  | 2017 |  | 2018 |  | 2017
Service cost |  | $ | 215 |  |  | $ | 210 |  |  | $ | 645 |  |  | $ | 630 |
Interest cost |  | 274 |  |  | 284 |  |  | 822 |  |  | 852 |
Expected return on plan assets |  | (693 | ) |  | (630 | ) |  | (2,077 | ) |  | (1,890 | )
Amortization of net loss |  | 129 |  |  | 169 |  |  | 386 |  |  | 507 |
Net Periodic Benefit Expense |  | $ | (75 | ) |  | $ | 33 |  |  | $ | (224 | ) |  | $ | 99 |

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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=108410482&loc=d3e1928-114920 + Details
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