Related Party Transactions - Commercial Agreements (Details) $ in Thousands	1 Months Ended	3 Months Ended		12 Months Ended
	Oct. 31, 2014 bbl $ / gal	Dec. 31, 2015 USD ($) bbl	Dec. 31, 2014 USD ($) bbl	Dec. 31, 2015 USD ($) bbl	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Oct. 30, 2015 bbl
Related Party Transaction [Line Items]
Active Storage Capacity		8,200,000		8,200,000
Deferred revenue - affiliate | $		$ 10,130	$ 6,779	$ 10,130	$ 6,779
Related Party Transaction, Expenses from Transactions with Related Party | $				46,859	40,136	$ 29,573
Northern Tier Energy LP [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party | $				$ 300
Product Supply Agreement [Member]
Related Party Transaction [Line Items]
Long-term Purchase Commitment, Minimum Quantity Required			79,000
Fuel Distribution and Supply Agreement [Member]
Related Party Transaction [Line Items]
Long-term Purchase Commitment, Minimum Quantity Required	645,000
Profit Margin, per Gallon | $ / gal	0.03
Deferred revenue - affiliate | $			$ 0		$ 0
Crude Oil Trucking Transportation Services Agreement [Member]
Related Party Transaction [Line Items]
Long-term Purchase Commitment, Minimum Quantity Required	1,525,000
TexNew Mex 16 inch pipeline [Member] | Pipelines and related assets
Related Party Transaction [Line Items]
Active Storage Capacity							80,000
Long-term Purchase Commitment, Minimum Volume Required		80,000
TexNew Mex 16 inch pipeline [Member]
Related Party Transaction [Line Items]
Long-term Purchase Commitment, Minimum Volume Required		13,000
TexNew Mex 16 inch pipeline [Member] | Western Refining, Inc. [Member]
Related Party Transaction [Line Items]
Economic Rights, Crude Oil Throughput, Percent							80.00%