Related Party Transactions (Details) $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended				6 Months Ended
	Oct. 31, 2014 bbl $ / gal	Dec. 31, 2013 USD ($)	Jun. 30, 2017 USD ($) mi bbl	Jun. 30, 2016 USD ($)	Mar. 31, 2016 bbl	Dec. 31, 2015 bbl	Jun. 30, 2017 USD ($) mi bbl	Jun. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)	Sep. 30, 2016 mi bbl	Oct. 30, 2015 bbl
Related Party Transaction [Line Items]
Active Storage Capacity			12,400,000				12,400,000
Deferred revenue - affiliate | $			$ 19,598				$ 19,598		$ 19,132
Related Party Transaction, Expenses from Transactions with Related Party | $			20,996	$ 18,013			41,520	$ 36,094
Operating Leases, Rent Expense | $			$ 2,100	2,400			$ 4,100	4,900
Pipeline, Miles | mi			705				705
Northern Tier Energy LP [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party | $			$ 200	$ 100			$ 400	$ 200
Maximum [Member] | Ground Lease and Access Agreements [Member] | Western Refining, Inc. [Member]
Related Party Transaction [Line Items]
Operating Leases, Rent Expense | $		$ 100
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]
Deferred revenue - affiliate | $									$ 0
Long-term Purchase Commitment, Minimum Quantity Required	645,000
Profit Margin, per Gallon | $ / gal	0.03
Crude Oil Trucking Transportation Services Agreement [Member]
Related Party Transaction [Line Items]
Long-term Purchase Commitment, Minimum Quantity Required	1,525,000
Pipelines and related assets | TexNew Mex 16 inch pipeline [Member]
Related Party Transaction [Line Items]
Active Storage Capacity											80,000
St. Paul Park Logistics Assets [Member]
Related Party Transaction [Line Items]
Pipeline, Miles | mi										2.5
St. Paul Park Logistics Assets [Member] | Pipelines and related assets
Related Party Transaction [Line Items]
Pipeline Segments										2
St. Paul Park Logistics Assets [Member] | Pipelines, Inactive [Member]
Related Party Transaction [Line Items]
Pipeline Segments										1
St. Paul Park Logistics Assets [Member] | Crude Oil Storage Tanks [Member]
Related Party Transaction [Line Items]
Active Storage Capacity										4,000,000
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%