Annual report pursuant to Section 13 and 15(d)

PLANT, PIPELINE AND EQUIPMENT (Details)

v3.20.1
PLANT, PIPELINE AND EQUIPMENT (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Property, Plant and Equipment [Line Items]      
Total plant, pipeline and equipment $ 274,806 $ 268,419  
Less accumulated depreciation (85,887) (73,762)  
PLANT, PIPELINE, AND EQUIPMENT, NET (Note 8) 188,919 194,657  
Interest capitalized for construction 0 731 $ 937
Capitalized labor costs 15 2,307 4,344
Amortization included in cost of sales 1,312 59 $ 25
Platinum catalyst      
Property, Plant and Equipment [Line Items]      
Total plant, pipeline and equipment 1,580 1,612  
Catalyst      
Property, Plant and Equipment [Line Items]      
Total plant, pipeline and equipment 4,095 3,131  
Land      
Property, Plant and Equipment [Line Items]      
Total plant, pipeline and equipment 5,428 5,428  
Plant, pipeline and equipment      
Property, Plant and Equipment [Line Items]      
Total plant, pipeline and equipment 258,651 253,905  
Construction in progress      
Property, Plant and Equipment [Line Items]      
Total plant, pipeline and equipment $ 5,052 $ 4,343