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Employee Postretirement Benefits (Tables) | 9 Months Ended
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Sep. 30, 2016
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract] |
Components of net periodic benefit cost | The table below presents net periodic benefit cost information for defined benefit plans and other postretirement benefit plans:
| Pension Benefits |  | Other Benefits
| Three Months Ended September 30
| 2016 |  | 2015 |  | 2016 |  | 2015
Service cost | $ | 8 |  |  | $ | 10 |  |  | $ | 3 |  |  | $ | 3 |
Interest cost | 35 |  |  | 39 |  |  | 7 |  |  | 8 |
Expected return on plan assets | (38 | ) |  | (43 | ) |  | — |  |  | — |
Recognized net actuarial loss | 13 |  |  | 13 |  |  | — |  |  | — |
Settlements | — |  |  | 19 |  |  | — |  |  | — |
Other | (2 | ) |  | (2 | ) |  | — |  |  | — |
Net periodic benefit cost | $ | 16 |  |  | $ | 36 |  |  | $ | 10 |  |  | $ | 11 |
| Pension Benefits |  | Other Benefits
| Nine Months Ended September 30
| 2016 |  | 2015 |  | 2016 |  | 2015
Service cost | $ | 32 |  |  | $ | 29 |  |  | $ | 9 |  |  | $ | 9 |
Interest cost | 110 |  |  | 148 |  |  | 24 |  |  | 25 |
Expected return on plan assets | (119 | ) |  | (173 | ) |  | — |  |  | — |
Recognized net actuarial loss | 39 |  |  | 61 |  |  | (1 | ) |  | (1 | )
Settlements | — |  |  | 1,348 |  |  | — |  |  | — |
Other | (7 | ) |  | (9 | ) |  | — |  |  | — |
Net periodic benefit cost | $ | 55 |  |  | $ | 1,404 |  |  | $ | 32 |  |  | $ | 33 |

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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