Condensed Consolidating Financial Information (Condensed Consolidating Statement of Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Net income (loss)	$ 26,166	$ 29,113	$ 21,148	$ 29,775	$ 17,886	$ 18,474	$ 26,902	$ 22,847	$ 106,202	$ 86,109	$ 96,319
Genesis Energy, L.P. (Parent and Co-Issuer)
Condensed Financial Statements, Captions [Line Items]
Net income (loss)									106,202	86,109	96,319
Genesis Energy Finance Corporation (Co-Issuer)
Condensed Financial Statements, Captions [Line Items]
Net income (loss)									0	0	0
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net income (loss)									172,363	135,273	137,300
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net income (loss)									1,680	13,215	20,358
Eliminations
Condensed Financial Statements, Captions [Line Items]
Net income (loss)									$ (174,043)	$ (148,488)	$ (157,658)