Consolidated Statements of Changes in Partners' Capital (Deficit) - USD ($) $ in Thousands	Total	Limited Partner [Member]	Preferred Partner [Member]	General Partner [Member]
Balance at Dec. 31, 2019	$ (21,323)	$ 356,777	$ 253,923	$ (632,023)
Net income (loss)	(13,480)	(38,382)	25,115	(213)
Equity-based incentive compensation	816	804	0	12
Distributions	(32,406)	(6,778)	(25,115)	(513)
Proceeds from sale of common units pursuant to the Employee Unit Purchase Plan	170	170	0	0
Balance at Dec. 31, 2020	(66,223)	312,591	253,923	(632,737)
Net income (loss)	110,530	83,827	24,953	1,750
Equity-based incentive compensation	618	604	0	14
Distributions	(32,115)	(6,866)	(24,740)	(509)
Proceeds from sale of common units pursuant to the Employee Unit Purchase Plan	154	154	0	0
Repurchase of Preferred Units	(5,407)	0	(5,407)	0
Balance at Dec. 31, 2021	$ 7,557	$ 390,310	$ 248,729	$ (631,482)