Quarterly report pursuant to Section 13 or 15(d)

Other Operating Expense, Net (Details)

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Other Operating Expense, Net (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Other Income and Expenses [Abstract]    
Amortization expense $ 8,949 $ 5,834
Transaction and other related costs 422 1,375
Restructuring and other related costs (Note 18) 120 1,196
Net loss on asset disposals 1,152 348
Management advisory fees 0 1,250
Insurance proceeds (1,244) 0
Other, net (85) 345
Other operating expense, net 9,314 $ 10,348
Proceeds from insurance settlement $ 1,500