Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues [Abstract]
Offshore pipeline transportation services	$ 318,239	$ 334,679	$ 140,230
Sodium minerals and sulfur services	462,622	171,503	177,880
Marine transportation	205,287	213,021	238,757
Onshore facilities and transportation	1,042,229	993,290	1,689,662
Total revenues	2,028,377	1,712,493	2,246,529
COSTS AND EXPENSES:
Onshore facilities and transportation product costs	866,458	823,524	1,481,619
Onshore facilities and transportation operating costs	102,189	101,103	121,189
Marine transportation operating costs	154,606	142,551	135,200
Sodium minerals and sulfur services operating costs	333,918	91,443	96,806
Offshore pipeline transportation operating costs	72,065	79,624	39,713
General and administrative	66,421	45,625	64,995
Depreciation, depletion and amortization	252,480	222,196	150,140
Gain on sale of assets	(40,311)	0	0
Total costs and expenses	1,807,826	1,506,066	2,089,662
OPERATING INCOME	220,551	206,427	156,867
Equity in earnings of equity investees	51,046	47,944	54,450
Interest expense	(176,762)	(139,947)	(100,596)
Gain on basis step up on historical interest	0	0	332,380
Other expense, net	(16,715)	0	(17,529)
Income from operations before income taxes	78,120	114,424	425,572
Income tax benefit (expense)	3,959	(3,342)	(3,987)
NET INCOME	82,079	111,082	421,585
Net loss attributable to noncontrolling interests	568	2,167	943
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	82,647	113,249	422,528
Less: Accumulated distributions attributable to Class A Convertible Preferred Units	(21,995)	0	0
NET INCOME AVAILABLE TO COMMON UNITHOLDERS	$ 60,652	$ 113,249	$ 422,528
BASIC AND DILUTED NET INCOME PER COMMON UNIT:
Basic and Diluted (in dollars per unit)	$ 0.50	$ 1.00	$ 4.10
WEIGHTED AVERAGE OUTSTANDING COMMON UNITS:
Basic and Diluted (in units)	121,546	113,433	103,004