Equity Investees (Consolidated Financial Statements Related to Equity Investees) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Equity Method Investments and Joint Ventures [Abstract]
Amortization of differences attributable to Genesis’ carrying value of equity investments	$ (3,566)	$ (3,566)	$ (10,698)	$ (10,698)
Distributions received	23,629	18,483	68,141	56,233
Equity in earnings of equity investees	17,242	13,236	49,606	40,252
Genesis’ share of operating earnings	$ 20,908	$ 16,802	$ 60,304	$ 50,950