Condensed Consolidating Financial Information (Narrative) (Details) (USD $) In Thousands, unless otherwise specified					3 Months Ended
Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2012 Genesis Energy, L.P. (Parent And Co-Issuer) [Member]	Dec. 31, 2011 Genesis Energy, L.P. (Parent And Co-Issuer) [Member]	Mar. 31, 2012 Genesis NEJD Pipeline, LLC [Member]
Condensed Financial Statements, Captions [Line Items]
Senior unsecured notes	$ 350,981	$ 250,000	$ 350,981	$ 250,000
Percentage of equity interest					100.00%

Carrying value as of the balance sheet date of uncollateralized debt obligation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_UnsecuredLongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant