v3.19.3.a.u2
Cover Page - USD ($)
12 Months Ended
Dec. 31, 2019
Feb. 14, 2020
Jun. 30, 2019
Cover page.      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2019    
Document Transition Report false    
Entity File Number 000-50056    
Entity Registrant Name MARTIN MIDSTREAM PARTNERS L.P.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 05-0527861    
Entity Address, Address Line One 4200 Stone Road    
Entity Address, City or Town Kilgore    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 75662    
City Area Code 903    
Local Phone Number 983-6200    
Title of 12(b) Security Common Units representing limited partnership interests    
Trading Symbol MMLP    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 233,826,839
Entity Common Stock, Shares Outstanding (in shares)   38,944,389  
Documents Incorporated by Reference None.    
Entity Central Index Key 0001176334    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Amendment Flag false