Equity-Based Compensation Plans (Summary of Service-Based and Performance-Based Awards) (Details) - Service-Based Awards - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Number of Phantom Units
Unvested at December 31, 2020 (in units)	220,132	208,518	165,662
Granted (in units)	74,106	70,068	71,340
Settled (in units)	(177,640)	(58,454)	(28,484)
Unvested at December 31, 2021 (in units)	116,598	220,132	208,518
Average Grant Date Fair Value
Unvested at December 31, 2020 (in dollars unit)	$ 8.97	$ 10.67	$ 11.19
Granted (in dollars per unit)	10.26	9.92	8.83
Settled (in dollars per unit)	7.46	16.17	9.05
Unvested at December 31, 2021 (in dollars per unit)	$ 12.09	$ 8.97	$ 10.67
Total Value (in thousands)
Unvested at December 31, 2020	$ 1,975	$ 2,225	$ 1,853
Granted	760	695	630
Settled	(1,325)	(945)	(258)
Unvested at December 31, 2021	$ 1,410	$ 1,975	$ 2,225