Quarterly report pursuant to Section 13 or 15(d)

PLANT, PIPELINE AND EQUIPMENT (Details)

v3.10.0.1
PLANT, PIPELINE AND EQUIPMENT (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Property, Plant and Equipment [Line Items]          
Total plant, pipeline and equipment $ 263,527   $ 263,527   $ 244,982
Less accumulated depreciation (71,216)   (71,216)   (63,240)
Net plant, pipeline and equipment 192,311   192,311   181,742
Interest capitalized for construction 0 $ 218 731 $ 878  
Capitalized labor costs 100 800 2,200 2,400  
Amortization relating to the platinum catalyst 24 $ 0 24 $ 25  
Platinum Catalyst Metal [Member]          
Property, Plant and Equipment [Line Items]          
Total plant, pipeline and equipment 1,612   1,612   1,612
Land [Member]          
Property, Plant and Equipment [Line Items]          
Total plant, pipeline and equipment 5,428   5,428   5,428
Plant, Pipeline and Equipment [Member]          
Property, Plant and Equipment [Line Items]          
Total plant, pipeline and equipment 254,560   254,560   186,946
Construction in Progress [Member]          
Property, Plant and Equipment [Line Items]          
Total plant, pipeline and equipment $ 1,927   $ 1,927   $ 50,996