v3.5.0.2
Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Property, Plant, and Equipment          
Gross property, plant and equipment $ 1,388,657   $ 1,388,657   $ 602,138
Less: Accumulated depreciation 234,089   234,089   209,005
Total property, plant and equipment, net 1,154,568   1,154,568   393,133
Capitalized interest 400 $ 0 400 $ 0  
Land and improvements          
Property, Plant, and Equipment          
Gross property, plant and equipment 12,958   12,958   5,441
Buildings and improvements          
Property, Plant, and Equipment          
Gross property, plant and equipment 14,529   14,529   3,049
Machinery and equipment          
Property, Plant, and Equipment          
Gross property, plant and equipment 1,337,487   1,337,487   574,326
Automotive equipment          
Property, Plant, and Equipment          
Gross property, plant and equipment 529   529   448
Furniture and fixtures          
Property, Plant, and Equipment          
Gross property, plant and equipment 1,280   1,280   918
Railcars          
Property, Plant, and Equipment          
Gross property, plant and equipment 16,265   16,265   16,315
Construction in progress          
Property, Plant, and Equipment          
Gross property, plant and equipment $ 5,609   $ 5,609   $ 1,641