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Other Income (Expense), Net (Q3) (Tables) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2018 | Dec. 31, 2017
Other Income and Expenses [Abstract] |  |
Components of Other (Expense) Income | The components of other income (expense) are as follows:
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
In thousands |  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Foreign currency (loss) |  | $ | (3,525 | ) |  | $ | (4,113 | ) |  | $ | (6,834 | ) |  | $ | (5,202 | )
Equity income |  |  | 632 |  |  |  | 520 |  |  |  | 2,855 |  |  |  | 1,587 |
Expected return on pension assets/amortization |  |  | 2,829 |  |  |  | 2,490 |  |  |  | 8,879 |  |  |  | 7,470 |
Other miscellaneous income |  |  | 1,265 |  |  |  | 660 |  |  |  | 1,058 |  |  |  | 1,449 |
Total other income (expense), net |  | $ | 1,201 |  |  | $ | (443 | ) |  | $ | 5,958 |  |  | $ | 5,304 |
| The components of other (expense) income, net are as follows:
|  |  | For the year ended December 31, |
| In thousands |  | 2017 |  |  | 2016 |  |  | 2015 |
| Foreign currency loss |  | $ | (6,618 | ) |  | $ | (4,001 | ) |  | $ | (4,659 | )
| Equity income |  |  | 2,579 |  |  |  | 409 |  |  |  | — |
| Expected return on pension assets/amortization |  |  | 9,834 |  |  |  | 9,491 |  |  |  | 9,079 |
| Other miscellaneous income (expense) |  |  | 3,073 |  |  |  | 629 |  |  |  | (652 | )
| Total other (expense) income, net |  | $ | 8,868 |  |  | $ | 6,528 |  |  | $ | 3,768 |

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- Definition Tabular disclosure of the components of non-operating income or non-operating expense that may include amounts earned from dividends, interest on securities, gains (losses) on securities sold, equity earnings of unconsolidated affiliates, net gain (loss) on sales of business, interest expense and other miscellaneous income or expense items. + References No definition available. + Details
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