Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVE INSTRUMENTS (Details)

v2.4.0.8
DERIVATIVE INSTRUMENTS (Details) (USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2013
DERIVATIVE INSTRUMENTS [Abstract]          
Feedstock and natural gas usage to operating expenses (in hundredths)     81.80% 79.70%  
Monthly feedstock requirements hedged, Maximum (in hundredths) 40.00%   40.00%    
Derivatives, Fair Value [Line Items]          
Unrealized loss     $ 48,000 $ 0  
Fair value of financial contracts - asset (liability) 0   0   (48,000)
Realized and unrealized gains (losses) as a percentage of cost of sales and processing (in hundredths) 0.00% 0.00% 0.00% 0.00%  
Net cumulative loss     63,000 127,000  
Interest expense reclassified from other comprehensive loss (11,000) 123,000 99,000 238,000  
Interest Rate Swaps [Member]
          
Derivatives, Fair Value [Line Items]          
Term loan in pay fixed, receive variable interest rate swap 10,000,000   10,000,000    
Term loan secured by plant, pipeline and equipment 14,000,000   14,000,000    
Notional amount 3,750,000   3,750,000    
Derivative, variable interest rate (in hundredths) 5.83%   5.83%    
Cumulative loss     (466,000) (696,000)  
Deferred tax benefit     163,000 243,000  
Net cumulative loss     (303,000) (453,000)  
Fair value of interest rate swap - liability 466,000   466,000   563,000
Cash flow hedge gain (loss) to be reclassified within twelve months     215,000    
Interest Rate Swaps [Member] | Qualifying Cash Flow Hedges [Member] | Reclassification [Member]
          
Derivatives, Fair Value [Line Items]          
Interest expense reclassified from other comprehensive loss     130,000 158,000  
Not Designated as Hedging Instrument [Member] | Commodity Financial Instruments [Member]
          
Derivatives, Fair Value [Line Items]          
Unrealized loss 0 0 (48,000) 0  
Realized gain 0 0 87,000 0  
Net gain (loss) $ 0 $ 0 $ 39,000 $ 0