Annual report pursuant to Section 13 and 15(d)

PLANT, PIPELINE AND EQUIPMENT (Details)

v3.6.0.2
PLANT, PIPELINE AND EQUIPMENT (Details) - USD ($)
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Property, Plant and Equipment [Line Items]      
Total plant, pipeline and equipment $ 194,486,000 $ 143,471,000  
Less accumulated depreciation (54,477,000) (46,564,000)  
PLANT, PIPELINE, AND EQUIPMENT, NET (Note 9) 140,009,000 96,907,000  
Interest capitalized for construction 450,000 141,000  
Amortization relating to the platinum catalyst 98,000 84,000 $ 84,000
Platinum Catalyst [Member]      
Property, Plant and Equipment [Line Items]      
Total plant, pipeline and equipment 1,612,000 1,612,000  
Land [Member]      
Property, Plant and Equipment [Line Items]      
Total plant, pipeline and equipment 5,376,000 4,577,000  
Plant, Pipeline and Equipment [Member]      
Property, Plant and Equipment [Line Items]      
Total plant, pipeline and equipment 154,107,000 128,302,000  
Construction in Progress [Member]      
Property, Plant and Equipment [Line Items]      
Total plant, pipeline and equipment $ 33,391,000 $ 8,980,000