Condensed Consolidating Financial Information (Condensed Consolidating Statement Of Cash Flows) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	$ 41,106	$ 62,465
Payments to acquire fixed and intangible assets	(118,252)	(111,504)
Cash distributions received from equity investees - return of investment	5,788	7,827
Investments in equity investees	(1,135)	(1,750)
Payments to Acquire Businesses, Gross	25,394	0
Increase (Decrease) in Due to Affiliates	0	0
Repayments on loan to non-guarantor subsidiary	0	0
Proceeds from Contribution in Aid of Construction	4,088	0
Proceeds from asset sales	224	1,768
Other, net	130	29
Net cash used in investing activities	(134,551)	(103,630)
Borrowings on senior secured credit facility	319,400	226,200
Repayments on senior secured credit facility	(154,400)	(128,200)
Increase (Decrease) Due from Affiliates	0	0
Distributions to partners/owners	(72,087)	(56,542)
Other, net	1,948	1,383
Net cash provided by financing activities	94,861	42,841
Net increase in cash and cash equivalents	1,416	1,676
Cash and cash equivalents at beginning of period	10,895	9,462
Cash and cash equivalents at end of period	12,311	11,138
Genesis Energy, L.P. (Parent And Co-Issuer) [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	33,558	34,229
Payments to acquire fixed and intangible assets	0	0
Cash distributions received from equity investees - return of investment	0	11,013
Investments in equity investees	0	0
Payments to Acquire Businesses, Gross	0
Increase (Decrease) in Due to Affiliates	(126,471)	(86,700)
Repayments on loan to non-guarantor subsidiary	0	0
Proceeds from Contribution in Aid of Construction	0
Proceeds from asset sales	0	0
Other, net	0	0
Net cash used in investing activities	(126,471)	(75,687)
Borrowings on senior secured credit facility	319,400	226,200
Repayments on senior secured credit facility	(154,400)	(128,200)
Increase (Decrease) Due from Affiliates	0	0
Distributions to partners/owners	(72,087)	(56,542)
Other, net	0	0
Net cash provided by financing activities	92,913	41,458
Net increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	6	9
Cash and cash equivalents at end of period	6	9
Genesis Energy Finance Corporation (Co-Issuer) [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	0	0
Payments to acquire fixed and intangible assets	0	0
Cash distributions received from equity investees - return of investment	0	0
Investments in equity investees	0	0
Payments to Acquire Businesses, Gross	0
Increase (Decrease) in Due to Affiliates	0	0
Repayments on loan to non-guarantor subsidiary	0	0
Proceeds from Contribution in Aid of Construction	0
Proceeds from asset sales	0	0
Other, net	0	0
Net cash used in investing activities	0	0
Borrowings on senior secured credit facility	0	0
Repayments on senior secured credit facility	0	0
Increase (Decrease) Due from Affiliates	0	0
Distributions to partners/owners	0	0
Other, net	0	0
Net cash provided by financing activities	0	0
Net increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	0	0
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	70,795	63,024
Payments to acquire fixed and intangible assets	(118,252)	(111,504)
Cash distributions received from equity investees - return of investment	5,788	7,827
Investments in equity investees	(1,135)	(1,750)
Payments to Acquire Businesses, Gross	25,394
Increase (Decrease) in Due to Affiliates	0	0
Repayments on loan to non-guarantor subsidiary	1,471	1,329
Proceeds from Contribution in Aid of Construction	4,088
Proceeds from asset sales	224	1,768
Other, net	130	29
Net cash used in investing activities	(133,080)	(102,301)
Borrowings on senior secured credit facility	0	0
Repayments on senior secured credit facility	0	0
Increase (Decrease) Due from Affiliates	133,203	94,858
Distributions to partners/owners	(72,087)	(56,542)
Other, net	1,948	1,383
Net cash provided by financing activities	63,064	39,699
Net increase in cash and cash equivalents	779	422
Cash and cash equivalents at beginning of period	8,288	8,352
Cash and cash equivalents at end of period	9,067	8,774
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	3,661	10,730
Payments to acquire fixed and intangible assets	0	0
Cash distributions received from equity investees - return of investment	0	0
Investments in equity investees	0	0
Payments to Acquire Businesses, Gross	0
Increase (Decrease) in Due to Affiliates	0	0
Repayments on loan to non-guarantor subsidiary	0	0
Proceeds from Contribution in Aid of Construction	0
Proceeds from asset sales	0	0
Other, net	0	0
Net cash used in investing activities	0	0
Borrowings on senior secured credit facility	0	0
Repayments on senior secured credit facility	0	0
Increase (Decrease) Due from Affiliates	(6,733)	(8,158)
Distributions to partners/owners	0	0
Other, net	3,709	(1,318)
Net cash provided by financing activities	(3,024)	(9,476)
Net increase in cash and cash equivalents	637	1,254
Cash and cash equivalents at beginning of period	2,601	1,101
Cash and cash equivalents at end of period	3,238	2,355
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	(66,908)	(45,518)
Payments to acquire fixed and intangible assets	0	0
Cash distributions received from equity investees - return of investment	0	(11,013)
Investments in equity investees	0	0
Payments to Acquire Businesses, Gross	0
Increase (Decrease) in Due to Affiliates	126,471	86,700
Repayments on loan to non-guarantor subsidiary	(1,471)	(1,329)
Proceeds from Contribution in Aid of Construction	0
Proceeds from asset sales	0	0
Other, net	0	0
Net cash used in investing activities	125,000	74,358
Borrowings on senior secured credit facility	0	0
Repayments on senior secured credit facility	0	0
Increase (Decrease) Due from Affiliates	(126,470)	(86,700)
Distributions to partners/owners	72,087	56,542
Other, net	(3,709)	1,318
Net cash provided by financing activities	(58,092)	(28,840)
Net increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	$ 0	$ 0