Quarterly report pursuant to Section 13 or 15(d)

PLANT, PIPELINE AND EQUIPMENT (Details)

v3.7.0.1
PLANT, PIPELINE AND EQUIPMENT (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Property, Plant and Equipment [Line Items]          
Total plant, pipeline and equipment $ 182,724,000   $ 182,724,000   $ 143,471,000
Less accumulated depreciation (52,986,000)   (52,986,000)   (46,564,000)
Net plant, pipeline and equipment 129,738,000   129,738,000   96,907,000
Interest capitalized for construction 52,000 $ 27,000 124,000 $ 122,000  
Amortization relating to the platinum catalyst 25,000 $ 21,000 72,000 $ 63,000  
Platinum Catalyst [Member]          
Property, Plant and Equipment [Line Items]          
Total plant, pipeline and equipment 1,612,000   1,612,000   1,612,000
Land [Member]          
Property, Plant and Equipment [Line Items]          
Total plant, pipeline and equipment 5,376,000   5,376,000   4,577,000
Plant, Pipeline and Equipment [Member]          
Property, Plant and Equipment [Line Items]          
Total plant, pipeline and equipment 153,529,000   153,529,000   128,302,000
Construction in Progress [Member]          
Property, Plant and Equipment [Line Items]          
Total plant, pipeline and equipment $ 22,207,000   $ 22,207,000   $ 8,980,000