Quarterly report pursuant to Section 13 or 15(d)

Property, Plant and Equipment (Details)

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Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Jun. 30, 2018
Dec. 31, 2017
Property, Plant and Equipment    
Property, plant and equipment, gross $ 1,586,284 $ 1,541,499
Less: accumulated depreciation (369,282) (311,115)
Property, plant and equipment, net 1,217,002 1,230,384
Land    
Property, Plant and Equipment    
Property, plant and equipment, gross 192,017 191,006
Buildings    
Property, Plant and Equipment    
Property, plant and equipment, gross 209,672 200,054
Machinery and equipment    
Property, Plant and Equipment    
Property, plant and equipment, gross 1,063,438 1,005,025
Construction in progress    
Property, Plant and Equipment    
Property, plant and equipment, gross $ 121,157 $ 145,414