Environmental Liabilities (Details) (USD $)	3 Months Ended	12 Months Ended		12 Months Ended					12 Months Ended				0 Months Ended		3 Months Ended			12 Months Ended
	Jun. 30, 2011	Dec. 31, 2012 item	Dec. 31, 2011	Dec. 31, 2012 ExxonMobil Gasoline Stations	Dec. 31, 2012 Alliance Gasoline Stations	Dec. 31, 2012 Mutual Oil	Dec. 31, 2012 Newburgh	Dec. 31, 2011 Newburgh	Dec. 31, 2012 Glenwood Landing and Inwood	Dec. 31, 2012 Albany	Mar. 02, 2012 Alliance Acquisition	Sep. 30, 2010 ExxonMobil Retail Gasoline Stations/Fuel Supply Acquisition	Jun. 02, 2010 Newburgh Terminals Acquisition item	Nov. 30, 2007 Glenwood Landing and Inwood, New York Terminal Acquisitions	Jun. 30, 2011 Albany and Newburgh, New York and Burlington, Vermont Terminal Acquisitions	Dec. 31, 2008 Albany and Newburgh, New York and Burlington, Vermont Terminal Acquisitions	May 31, 2007 Albany and Newburgh, New York and Burlington, Vermont Terminal Acquisitions	Dec. 31, 2011 Albany and Newburgh, New York and Burlington, Vermont Terminal Acquisitions Albany
Environmental Liabilities
Total environmental liabilities		$ 44,172,000		$ 26,610,000	$ 14,984,000	$ 625,000	$ 1,500,000	$ 1,500,000	$ 347,000	$ 106,000
Number of acquired sites involved in ongoing environmental remediation		6
Number of refined petroleum products terminals acquired													3
Assumed environmental liabilities, recorded on an undiscounted basis		600,000									16,100,000	30,000,000	1,500,000	1,200,000			8,000,000
Change in environmental liability	1,700,000														1,700,000	2,800,000
Effect of reduction in environmental liability on net income																		1,700,000
Effect of reduction in environmental liability on net income per limited partner unit, basic and diluted (in dollars per share)																		$ 0.08
Changes in environmental liabilities during the period
Balance at the beginning of the period		30,239,000		28,163,000			1,500,000	1,500,000	404,000	172,000
Additions		16,700,000			16,075,000	625,000
Payments		(2,767,000)		(1,553,000)	(1,091,000)				(57,000)	(66,000)
Balance at the end of the period		44,172,000		26,610,000	14,984,000	625,000	1,500,000	1,500,000	347,000	106,000
Environmental liabilities
Current portion		4,341,000	2,936,000
Long-term portion		39,831,000	27,303,000
Total environmental liabilities		$ 44,172,000		$ 26,610,000	$ 14,984,000	$ 625,000	$ 1,500,000	$ 1,500,000	$ 347,000	$ 106,000