Equity Investees (Consolidated Financial Statements Related to Equity Investees) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Equity Method Investments and Joint Ventures [Abstract]
Amortization of differences attributable to Genesis’ carrying value of equity investments	$ (3,566)	$ (3,566)	$ (7,132)	$ (7,132)
Distributions received	20,678	18,732	44,512	37,750
Equity in earnings of equity investees	14,811	14,572	32,364	27,016
Genesis’ share of operating earnings	$ 18,377	$ 18,138	$ 39,496	$ 34,148