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Property, Plant and Equipment - Schedule of Property Plant and Equipment (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Property, Plant and Equipment [Line Items]    
Cost $ 90,422 $ 89,901
Less: accumulated depreciation (38,384) (29,538)
Property, plant and equipment, net 52,038 60,363
Liquefaction plants and systems    
Property, Plant and Equipment [Line Items]    
Cost $ 40,841 40,617
Liquefaction plants and systems | Minimum    
Property, Plant and Equipment [Line Items]    
Estimated Useful Life (years) 10 years  
Liquefaction plants and systems | Maximum    
Property, Plant and Equipment [Line Items]    
Estimated Useful Life (years) 15 years  
Real property and buildings    
Property, Plant and Equipment [Line Items]    
Cost $ 1,649 1,794
Real property and buildings | Minimum    
Property, Plant and Equipment [Line Items]    
Estimated Useful Life (years) 3 years  
Real property and buildings | Maximum    
Property, Plant and Equipment [Line Items]    
Estimated Useful Life (years) 25 years  
Vehicles and tanker trailers and equipment    
Property, Plant and Equipment [Line Items]    
Cost $ 47,179 46,597
Vehicles and tanker trailers and equipment | Minimum    
Property, Plant and Equipment [Line Items]    
Estimated Useful Life (years) 2 years  
Vehicles and tanker trailers and equipment | Maximum    
Property, Plant and Equipment [Line Items]    
Estimated Useful Life (years) 10 years  
Computer and office equipment    
Property, Plant and Equipment [Line Items]    
Cost $ 532 453
Computer and office equipment | Minimum    
Property, Plant and Equipment [Line Items]    
Estimated Useful Life (years) 2 years  
Computer and office equipment | Maximum    
Property, Plant and Equipment [Line Items]    
Estimated Useful Life (years) 7 years  
Construction in progress    
Property, Plant and Equipment [Line Items]    
Cost $ 191 409
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Cost $ 30 $ 31