Acquisitions (Details) (USD $)	3 Months Ended		3 Months Ended	1 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended		0 Months Ended					0 Months Ended					0 Months Ended	3 Months Ended			0 Months Ended						0 Months Ended				3 Months Ended		3 Months Ended		3 Months Ended
	Mar. 31, 2013	Dec. 21, 2012 Leasehold improvements	Mar. 31, 2013 Lease agreements with above average market value	Dec. 31, 2012 Other Acquisition	Mar. 31, 2012 Predecessor	Dec. 21, 2012 Dunmore Oil and JoJo Oil item	Mar. 31, 2013 Dunmore Oil and JoJo Oil	Dec. 21, 2012 Dunmore Oil and JoJo Oil LGO	Dec. 21, 2012 Dunmore Oil and JoJo Oil Non-compete agreement Joseph Gentile, Jr	Dec. 21, 2012 Dunmore Oil and JoJo Oil Land	Dec. 21, 2012 Dunmore Oil and JoJo Oil Buildings and improvements	Dec. 21, 2012 Dunmore Oil and JoJo Oil Leasehold improvements	Dec. 21, 2012 Dunmore Oil and JoJo Oil Equipment and other	Dec. 21, 2012 Dunmore Oil and JoJo Oil Buildings	Dec. 21, 2012 Dunmore Oil and JoJo Oil Equipment Minimum	Dec. 21, 2012 Dunmore Oil and JoJo Oil Equipment Maximum	Dec. 21, 2012 Dunmore Oil and JoJo Oil Wholesale fuel distribution rights	Dec. 21, 2012 Dunmore Oil and JoJo Oil Lease agreements with above average market value	Dec. 21, 2012 Express Lane	Mar. 31, 2013 Express Lane	Dec. 31, 2012 Express Lane LGO	Dec. 21, 2012 Express Lane LGO	Dec. 21, 2012 Express Lane Express Lane Stock Purchase Agreement item	Dec. 21, 2012 Express Lane Express Lane Purchase and Sale Agreement item	Dec. 21, 2012 Express Lane Land	Dec. 21, 2012 Express Lane Buildings and improvements	Dec. 21, 2012 Express Lane Leasehold improvements	Dec. 21, 2012 Express Lane Equipment and other	Dec. 21, 2012 Express Lane Buildings	Dec. 21, 2012 Express Lane Equipment Minimum	Dec. 21, 2012 Express Lane Equipment Maximum	Dec. 21, 2012 Express Lane Wholesale fuel distribution rights	Mar. 31, 2013 Express Lane Lease agreements with above average market value	Dec. 21, 2012 Express Lane Lease agreements with above average market value	Mar. 31, 2013 Express Lane Lease agreements with below average market value	Dec. 21, 2012 Express Lane Lease agreements with below average market value	Mar. 31, 2012 Express Lane Predecessor
Acquisitions
Number of locations acquired						24																	41
Number of locations acquired as a fee simple interest						23																	1	6
Number of locations acquired as leasehold interests						1																	40
Number of wholesale fuel supply purchase agreements acquired																								2
Aggregate purchase price consideration of cash						$ 28,000,000			$ 500,000										$ 41,900,000
Aggregate purchase price																			45,400,000
Advance rent payments								500,000														1,000,000
Receivables																					1,800,000
Escrow deposit						500,000													1,100,000
Portion of escrow deposit allocated for funding of any indemnification or similar claims made																			1,000,000
Portion of escrow deposit allocated for pending completion of environmental remediation measures																			100,000
Portion of escrow deposit allocated to Tax Escrow																			600,000
Period of non-compete agreement									5 years														4 years
Preliminary fair values of the assets acquired and liabilities assumed
Property Plant and Equipment		500,000								6,500,000	9,200,000	500,000	4,200,000												3,900,000	7,700,000	4,200,000	11,700,000
Intangible Asset Agreement																	8,200,000															15,000,000				2,600,000
Environmental indemnification assets																			1,177,000
Net working capital																			1,822,000
Total identifiable assets						28,600,000													48,099,000
Lease agreements with above average market value																		200,000																2,500,000
Environmental liabilities																			1,177,000
Total liabilities assumed																			3,677,000
Net identifiable assets acquired						28,400,000													44,422,000
Goodwill						600,000													993,000
Net assets acquired						29,000,000													45,415,000
Cumulative adjustments, other than reclassifications within property and equipment						0													0
Post closing preliminary adjustment																			1,800,000
Period for valuation and completion of purchase price						1 year
Pro forma information
Total revenues																																					471,974,000
Net loss																																					(4,033,000)
Estimated useful life														20 years	5 years	15 years													20 years	5 years	15 years
Estimated weighted average useful life			5 years														10 years															10 years	5 years		5 years
Incremental rent income for acquisition	3,352,000				3,113,000		500,000													31,200,000
Acquisition related costs							500,000
Purchase of property from a related party
Consideration paid for purchase of property from a related party				$ 2,900,000