Related Party Transactions Terminal Services Agreements Narrative (Details)	6 Months Ended
	Jun. 30, 2014
Related Party Transaction [Line Items]
Initial term of agreement	5 years
Terminal Services Agreements [Member] | Martin Resource Management [Member]
Related Party Transaction [Line Items]
Termination written notice, minimum	60 days
Marine Transportation Agreement [Member]
Related Party Transaction [Line Items]
Number of agreements	3
Marine Transportation Agreement [Member] | Martin Resource Management [Member]
Related Party Transaction [Line Items]
Termination written notice, minimum	60 days