Quarterly report pursuant to Section 13 or 15(d)

PLANT, PIPELINE AND EQUIPMENT (Details)

v2.4.1.9
PLANT, PIPELINE AND EQUIPMENT (Details) (USD $)
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Property, Plant and Equipment [Line Items]      
Total plant, pipeline and equipment $ 120,646,000us-gaap_PropertyPlantAndEquipmentGross   $ 113,130,000us-gaap_PropertyPlantAndEquipmentGross
Less accumulated depreciation (41,277,000)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment   (39,319,000)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Net plant, pipeline and equipment 79,369,000us-gaap_PropertyPlantAndEquipmentNet   73,811,000us-gaap_PropertyPlantAndEquipmentNet
Interest capitalized for construction 27,000us-gaap_AccumulatedCapitalizedInterestCosts 0us-gaap_AccumulatedCapitalizedInterestCosts  
Amortization relating to the platinum catalyst 21,067us-gaap_CostOfGoodsSoldAmortization 21,067us-gaap_CostOfGoodsSoldAmortization  
Platinum catalyst [Member]      
Property, Plant and Equipment [Line Items]      
Total plant, pipeline and equipment 1,612,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_OilAndGasPropertiesMember 		  1,612,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_OilAndGasPropertiesMember
Land [Member]      
Property, Plant and Equipment [Line Items]      
Total plant, pipeline and equipment 4,577,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LandMember 		  4,577,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LandMember
Plant, pipeline and equipment [Member]      
Property, Plant and Equipment [Line Items]      
Total plant, pipeline and equipment 96,271,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_MachineryAndEquipmentMember 		  95,351,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_MachineryAndEquipmentMember
Construction in progress [Member]      
Property, Plant and Equipment [Line Items]      
Total plant, pipeline and equipment $ 18,186,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ConstructionInProgressMember 		  $ 11,590,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ConstructionInProgressMember