Related Party Transactions Marine Agreements Narrative (Details) (Marine Transportation Agreement [Member], Martin Resource Management [Member])	6 Months Ended
Jun. 30, 2014
Marine Transportation Agreement [Member] \| Martin Resource Management [Member]
Related Party Transaction [Line Items]
Automatic consecutive term renewal period	1 year
Termination written notice, minimum	60 days

The term of the automatic consecutive renewal periods under the agreement, following the expiration of the initial term.

No definition available.

Name:	mmlp_AutomaticConsecutiveTermRenewal
Namespace Prefix:	mmlp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration