Annual report pursuant to Section 13 and 15(d)

Other Operating Expense, Net (Details)

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Other Operating Expense, Net (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Other Income and Expenses [Abstract]      
Amortization expense $ 32,010 $ 25,263 $ 6,605
Transaction and other related costs 7,415 4,952 4,241
Restructuring and other related costs (Note 23) 8,490 12,630 4,147
Net loss on asset disposals 5,793 4,216 3,911
Intangible asset impairment charge 0 6,873 0
Management advisory fees (Note 26) 3,777 3,584 590
Environmental-related costs (Note 22) 395 1,352 202
Other, net 6,345 3,431 0
Other operating expense, net $ 64,225 $ 62,301 $ 19,696