Income Taxes (Federal Statutory Income Tax Rate to Income Before Income Taxes) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income (loss) from operations before income taxes	$ 146,328,000	$ 132,304,000	$ (136,362,000)
Partnership income (loss) not subject to federal income tax	(135,349,000)	(126,403,000)	140,092,000
Income subject to federal income taxes	10,979,000	5,901,000	3,730,000
Tax expense at federal statutory rate	2,306,000	1,239,000	783,000
State income taxes, net of federal tax	(467,000)	1,248,000	574,000
Return to provision, federal and state	(169,000)	44,000	(227,000)
Other	(2,077,000)	(18,000)	112,000
Valuation allowance	388,000	656,000	428,000
Income tax expense (benefit)	$ (19,000)	$ 3,169,000	$ 1,670,000
Effective tax rate on income (loss) from operations before income taxes	(0.01%)	2.40%	(1.20%)
Liability for uncertain tax positions	$ 0	$ 0	$ 0