CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common units	Partners' equity — common units	Series B cumulative convertible preferred units on an as-converted basis	Series B cumulative convertible preferred units on an as-converted basis Partners' equity — common units
Beginning balance (in shares) at Dec. 31, 2020		206,749
Beginning balance at Dec. 31, 2020	$ 760,606		$ 760,606
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchases of common units (in shares)		(223)
Repurchases of common units	(1,957)		(1,957)
Restricted units granted, net of forfeitures (in shares)		1,016
Equity–based compensation	5,353		5,353
Distributions	(36,272)		(36,272)
Charges to partners' equity for accrued distribution equivalent rights	(237)		(237)
Distributions on Series B cumulative convertible preferred units				$ (5,250)	$ (5,250)
Net income (loss)	16,186		16,186
Ending balance (in shares) at Mar. 31, 2021		207,542
Ending balance at Mar. 31, 2021	738,429		738,429
Beginning balance (in shares) at Dec. 31, 2021		208,666
Beginning balance at Dec. 31, 2021	765,268		765,268
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchases of common units (in shares)		(262)
Repurchases of common units	(2,991)		(2,991)
Restricted units granted, net of forfeitures (in shares)		988
Equity–based compensation	6,659		6,659
Distributions	(56,462)		(56,462)
Charges to partners' equity for accrued distribution equivalent rights	(434)		(434)
Distributions on Series B cumulative convertible preferred units				$ (5,250)	$ (5,250)
Net income (loss)	(7,002)		(7,002)
Ending balance (in shares) at Mar. 31, 2022		209,392
Ending balance at Mar. 31, 2022	$ 699,788		$ 699,788