Equity Investees (Consolidated Financial Statements Related To Equity Investees) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Equity Method Investments and Joint Ventures [Abstract]
Genesis’ share of operating earnings	$ 17,157	$ 53,783	$ 33,152
Amortization of differences attributable to Genesis' carrying value of equity investments	37,293	(10,648)	(10,477)
Net equity in earnings	54,450	43,135	22,675
Distributions received	$ 97,468	$ 75,528	$ 46,564