Supplemental Guarantor Condensed Consolidating Financial Statements (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Sales	$ 2,979,116	$ 5,116,928
Cost of sales	2,810,558	4,957,904
Gross profit	168,558	159,024
Costs and operating expenses:
Selling, general and administrative expenses	48,786	37,298
Operating expenses	68,656	47,952
Amortization expense	5,341	4,528
Loss on asset sales	437	663
Total costs and operating expenses	123,220	90,441
Operating income	45,338	68,583
Interest expense	(13,963)	(11,107)
Income before income tax expense	31,375	57,476
Income tax expense	(966)	(322)
Net income	30,409	57,154
Net (income) loss attributable to noncontrolling interest	6	(144)
Net income attributable to Global Partners LP	30,415	57,010
Less: General partner's interest in net income, including incentive distribution rights	2,179	1,508
Limited partners' interest in net income	28,236	55,502
Eliminations
Sales	(4,119)	(6,091)
Cost of sales	(4,119)	(6,091)
(Issuer) Guarantor Subsidiaries
Sales	2,975,185	5,114,874
Cost of sales	2,812,472	4,962,534
Gross profit	162,713	152,340
Costs and operating expenses:
Selling, general and administrative expenses	48,026	36,543
Operating expenses	66,317	45,180
Amortization expense	2,586	1,773
Loss on asset sales	437	663
Total costs and operating expenses	117,366	84,159
Operating income	45,347	68,181
Interest expense	(13,958)	(11,066)
Income before income tax expense	31,389	57,115
Income tax expense	(966)	(322)
Net income	30,423	56,793
Net income attributable to Global Partners LP	30,423	56,793
Less: General partner's interest in net income, including incentive distribution rights	2,179	1,508
Limited partners' interest in net income	28,244	55,285
Non-Guarantor Subsidiary
Sales	8,050	8,145
Cost of sales	2,205	1,461
Gross profit	5,845	6,684
Costs and operating expenses:
Selling, general and administrative expenses	760	755
Operating expenses	2,339	2,772
Amortization expense	2,755	2,755
Total costs and operating expenses	5,854	6,282
Operating income	(9)	402
Interest expense	(5)	(41)
Income before income tax expense	(14)	361
Net income	(14)	361
Net (income) loss attributable to noncontrolling interest	6	(144)
Net income attributable to Global Partners LP	(8)	217
Limited partners' interest in net income	$ (8)	$ 217