XML 229 R198.htm IDEA: XBRL DOCUMENT v3.10.0.1
Other Income (Expense), Net - Components of Other Income Expense (Q3) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Other Income and Expenses [Abstract]              
Foreign currency (loss) $ (3,525) $ (4,113) $ (6,834) $ (5,202) $ (6,618) $ (4,001) $ (4,659)
Equity income 632 520 2,855 1,587 2,579 409 0
Expected return on pension assets/amortization 2,829 2,490 8,879 7,470 9,834 9,491 9,079
Other miscellaneous income 1,265 660 1,058 1,449 3,073 629 (652)
Total other (expense) income, net $ 1,201 $ (443) $ 5,958 $ 5,304 $ 8,868 $ 6,528 $ 3,768