Business Segment Information (Reconciliation of Segment Margin to (Loss) Income from Continuing Operations) (Details) - USD ($) $ in Thousands		3 Months Ended
	Feb. 15, 2018	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting [Abstract]
Total Segment Margin		$ 170,240	$ 138,645
Corporate general and administrative expenses		(10,460)	(8,327)
Depreciation, depletion, amortization and accretion		(78,008)	(58,395)
Interest expense		(56,136)	(36,739)
Adjustment to exclude distributable cash generated by equity investees not included in income and include equity in investees net income (1)		(9,057)	(9,290)
Non-cash items not included in Segment Margin		(6,137)	437
Cash payments from direct financing leases in excess of earnings		(1,839)	(1,667)
Loss on extinguishment of debt	$ (3,300)	(3,339)	0
Differences in timing of cash receipts for certain contractual arrangements		3,331	2,681
Non-cash provision for leased items no longer in use		(186)	0
Income tax expense		(375)	(255)
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.		$ 8,034	$ 27,090