Equity Investees (Consolidated Financial Statements Related to Equity Investees) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Equity Method Investments and Joint Ventures [Abstract]
Genesis’ share of operating earnings	$ 18,918	$ 12,266	$ 35,788	$ 26,780
Amortization of excess purchase price	(3,872)	(3,942)	(7,745)	(7,884)
Net equity in earnings	15,046	8,324	28,043	18,896
Distributions received	$ 20,721	$ 18,361	$ 38,546	$ 37,990

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

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