16. Concentration of Risk (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Concentration Risk	100.00%	100.00%	100.00%	100.00%
LPG mix
Concentration Risk	0.20%	0.00%		0.00%
Naphtha
Concentration Risk	21.80%	24.30%	23.00%	25.60%
Jet Fuel
Concentration Risk	29.60%	4.80%	23.30%	1.60%
NRLM
Concentration Risk	0.00%	44.90%	15.80%	48.20%
Oil-based mud blendstock
Concentration Risk	25.10%	0.00%	12.70%	0.00%
Atmospheric gas oil
Concentration Risk	23.30%	26.00%	25.00%	24.50%
Reduced crude
Concentration Risk	0.00%	0.00%	0.00%	0.10%