Quarterly report pursuant to Section 13 or 15(d)

Property, Plant and Equipment - Additional Information (Detail)

v3.19.3
Property, Plant and Equipment - Additional Information (Detail) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 10, 2019
Sep. 30, 2019
Dec. 31, 2018
Property, Plant and Equipment [Line Items]      
Future proceeds from sale of assets   $ 4,969 $ 0
Non-operating interests      
Property, Plant and Equipment [Line Items]      
Consideration from sale of assets $ 14,800    
Future proceeds from sale of assets 4,940    
Gain on sale of assets 4,200    
Other Income | Non-operating interests      
Property, Plant and Equipment [Line Items]      
Gain on sale of assets   $ 2,800  
Cash | Non-operating interests      
Property, Plant and Equipment [Line Items]      
Consideration from sale of assets 6,200    
Prepaid and other current assets | Non-operating interests      
Property, Plant and Equipment [Line Items]      
Consideration from sale of assets $ 3,700