Partners' Capital (Preferred Units) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Class C Preferred Units, beginning balance	$ 397,387	$ 345,205	$ 345,205
Accretion of discount			52,182
Class C Preferred Units, ending balance	397,387		$ 397,387
Interest expense	$ 15,511	30,447
Class C preferred units
Warrant exercise period	30 days
Interest expense	$ 14,400	$ 12,900
Class C preferred units | Distribution period commencing with the quarter ended on September 30, 2019
Distributions (as a percent)		14.00%