Quarterly report pursuant to Section 13 or 15(d)

Fair Value Recurring Measurements (Details)

v3.7.0.1
Fair Value Recurring Measurements (Details) - Fair Value, Measurements, Recurring - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Assets:    
RINs obligation surplus $ 6,077  
Swaps | Interest Rate Swaps    
Liabilities:    
Derivative Liabilities 1,663 $ 1,956
Forward Contracts | Commodity Contracts    
Liabilities:    
Derivative Liabilities 803 1,561
Forward Contracts | Fair Value Hedges    
Assets:    
Derivative Assets 17,340 14,777
Level 1    
Assets:    
RINs obligation surplus 0  
Level 1 | Swaps | Interest Rate Swaps    
Liabilities:    
Derivative Liabilities 0 0
Level 1 | Forward Contracts | Commodity Contracts    
Liabilities:    
Derivative Liabilities 803 1,561
Level 1 | Forward Contracts | Fair Value Hedges    
Assets:    
Derivative Assets 0 0
Level 2    
Assets:    
RINs obligation surplus 6,077  
Level 2 | Swaps | Interest Rate Swaps    
Liabilities:    
Derivative Liabilities 1,663 1,956
Level 2 | Forward Contracts | Commodity Contracts    
Liabilities:    
Derivative Liabilities 0 0
Level 2 | Forward Contracts | Fair Value Hedges    
Assets:    
Derivative Assets 17,340 14,777
Level 3    
Assets:    
RINs obligation surplus 0  
Level 3 | Swaps | Interest Rate Swaps    
Liabilities:    
Derivative Liabilities 0 0
Level 3 | Forward Contracts | Commodity Contracts    
Liabilities:    
Derivative Liabilities 0 0
Level 3 | Forward Contracts | Fair Value Hedges    
Assets:    
Derivative Assets $ 0 $ 0