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Pension Information (Tables) | 6 Months Ended
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Jun. 30, 2018
Compensation And Retirement Disclosure [Abstract] |
Components of Net Periodic Pension Benefit | Net periodic pension benefit was as follows:
|  | Three months ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Service cost |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Interest cost |  |  | 125 |  |  |  | 171 |  |  |  | 250 |  |  |  | 338 |
Expected return on plan assets |  |  | (273 | ) |  |  | (283 | ) |  |  | (546 | ) |  |  | (561 | )
Other components |  |  | 143 |  |  |  | 426 |  |  |  | 286 |  |  |  | 520 |
Net periodic pension benefit |  | $ | (5 | ) |  | $ | 314 |  |  | $ | (10 | ) |  | $ | 297 |

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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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