Partners' Capital - Incentive Distribution Rights (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	0 Months Ended			1 Months Ended	12 Months Ended
	Aug. 29, 2014	Nov. 26, 2012	Jan. 25, 2012	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	May 05, 2014	Oct. 02, 2012
Limited Partners' Capital Account [Line Items]
General partner interest percentage	2.00%	2.00%	2.00%	2.00%	2.00%
Martin Midstream GP LLC [Member]
Limited Partners' Capital Account [Line Items]
General partner interest percentage					2.00%
Incentive distribution foregone					20,845			$ 3,000	$ 18,000
Incentive distribution foregone remaining					155
Distributions payable on behalf of IDRs					0	$ 0	$ 2,857
Martin Midstream GP LLC [Member] | Target Level 1 [Member]
Limited Partners' Capital Account [Line Items]
Target cash distribution, percent					2.00%
Target cash distribution (in dollars per share)					0.55
Martin Midstream GP LLC [Member] | Target Level 2 [Member]
Limited Partners' Capital Account [Line Items]
Target cash distribution, percent					15.00%
Target cash distribution (in dollars per share)					0.625
Martin Midstream GP LLC [Member] | Target Level 3 [Member]
Limited Partners' Capital Account [Line Items]
Target cash distribution, percent					25.00%
Target cash distribution (in dollars per share)					0.75
Martin Midstream GP LLC [Member] | Target Level 4 [Member]
Limited Partners' Capital Account [Line Items]
Target cash distribution, percent					50.00%