Summary of Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Related Party Transaction [Line Items]
Pipeline Loss Allowance	0.20%
Pipeline Loss Allowance, Subtraction per Barrel from Month's Calendar Day Average for WTI Crude Oil	8.00
Western Refining, Inc. [Member]
Related Party Transaction [Line Items]
Shortfall Billings	$ 2,600,000
Revenue, Affiliate Percentage	$ 0.94	$ 0.82	$ 0.71
Maximum [Member]
Related Party Transaction [Line Items]
Cash and Cash Equivalents, Short-Term Investments, Maturity Duration	3 months