Organization and Basis of Presentation (Details)
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6 Months Ended | 6 Months Ended | 0 Months Ended | |||||
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Jun. 30, 2013
item
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Dec. 31, 2012
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Jun. 30, 2013
Affiliates of general partner
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Mar. 02, 2012
Alliance
AE Holdings
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Mar. 02, 2012
Alliance
AE Holdings
Members of Slifka family
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Feb. 28, 2013
Basin Transload LLC
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Feb. 01, 2013
Basin Transload LLC
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Feb. 15, 2013
Cascade Kelly
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Organization | ||||||||
Number of owned, leased and/or supplied gasoline stations | 900 | |||||||
Percentage of outstanding membership interests acquired | 100.00% | 60.00% | 60.00% | 100.00% | ||||
Affiliate ownership percentage of seller in acquisition | 95.00% | |||||||
Number of independent directors of the general partner's board of directors serving on the conflicts committee | 3 | |||||||
General partner interest (as a percent) | 0.83% | |||||||
Number of common units held | 27,393,786 | 27,310,648 | 11,546,993 | |||||
Limited partner ownership interest (as a percent) | 42.10% |