Equity Investees (Consolidated Financial Statements Related To Equity Investees) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Equity Method Investments and Joint Ventures [Abstract]
Genesis' share of operating earnings	$ 21,403	$ 7,505	$ 39,663	$ 17,906
Amortization of excess purchase price	(2,742)	(2,583)	(5,483)	(5,166)
Net equity in earnings	18,661	4,922	34,180	12,740
Distributions received	$ 24,399	$ 15,045	$ 50,301	$ 27,625