Related Party Transactions (Details) (USD $)					3 Months Ended							1 Months Ended	3 Months Ended				3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 GPC	Dec. 31, 2012 GPC	Mar. 31, 2013 GPC Second amended and restated terminal storage rental and throughput agreement Members of Slifka family	Mar. 31, 2013 GPC Amended and restated services agreement	Mar. 31, 2012 GPC Amended and restated services agreement	Mar. 31, 2012 Alliance	Mar. 31, 2013 Alliance Amended and restated services agreement	Mar. 31, 2012 Alliance Amended and restated services agreement	Mar. 31, 2012 Alliance Management agreements Global Companies LLC and GMG	Mar. 31, 2012 AE Holdings Shared services agreement Global Companies LLC	Mar. 31, 2013 AE Holdings Shared services agreement Global Companies LLC	Mar. 31, 2013 General Partner	Mar. 31, 2012 General Partner	Dec. 31, 2012 General Partner	Mar. 31, 2013 General Partner Second amended and restated terminal storage rental and throughput agreement Members of Slifka family	Mar. 31, 2012 General Partner Second amended and restated terminal storage rental and throughput agreement Members of Slifka family
Related Party Transactions
Percentage ownership interest					100.00%
Information on related party transaction
Expenses incurred from transactions with related parties														$ 13,800,000	$ 9,700,000		$ 2,300,000	$ 2,200,000
Amount to be paid per year												15,000
Notice period to terminate the receipt of services under the agreement						180 days							180 days
Income from services provided to related parties						24,000	24,000			31,000
Gains or losses recognized as a result of the termination of agreement									0
Sales to related parties								40,600,000
Management fee											433,000
Overhead reimbursement											250,000
Receivables from related parties	$ 1,355,000	$ 1,307,000	$ 285,000	$ 275,000										$ 1,070,000		$ 1,032,000