Related Party Transactions (Omnibus Agreement) (Details) - Omnibus Agreement - Martin Resource Management - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Related Party Transaction [Line Items]
Noncompete restriction threshold	$ 5,000		$ 5,000
Noncompete restriction ownership option opportunity threshold minimum	5,000		5,000
Noncompete restriction ownership option opportunity threshold minimum with equity limitation	$ 5,000		$ 5,000
Equity limitation on ownership restriction percentage	20.00%		20.00%
Approved annual reimbursements for indirect expenses			$ 13,679
Indirect expenses reimbursed	$ 3,420	$ 3,134	$ 10,259	$ 9,401