Equity Investees (Consolidated Financial Statements Related to Equity Investees) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Equity Method Investments and Joint Ventures [Abstract]
Genesis’ share of operating earnings	$ 71,975	$ 59,255	$ 66,814
Amortization of differences attributable to Genesis' carrying value of equity investments	(15,491)	(15,629)	(15,768)
Net equity in earnings	56,484	43,626	51,046
Distributions received	$ 77,331	$ 71,714	$ 82,898

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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