Consolidated Statements of Partners' Capital - USD ($) shares in Thousands, $ in Thousands		Total	Cumulative Effect, Period of Adoption, Adjustment	General Partner	General Partner Cumulative Effect, Period of Adoption, Adjustment	Common Unitholders	Warrant Holders	Accumulated Other Comprehensive Income (Loss)	Partners Capital Excluding Noncontrolling Interest	Partners Capital Excluding Noncontrolling Interest Cumulative Effect, Period of Adoption, Adjustment	Non-Controlling Interest	Common unitholders	Common unitholders Common Unitholders	Common unitholders Common Unitholders Cumulative Effect, Period of Adoption, Adjustment	General Partner	General Partner General Partner	Common unitholders and general partner	Common unitholders and general partner Partners Capital Excluding Noncontrolling Interest	Preferred Partner	Preferred Partner General Partner	Preferred Partner Common Unitholders	Preferred Partner Partners Capital Excluding Noncontrolling Interest
Balance, beginning of period (in shares) at Dec. 31, 2018						12,249
Balance, beginning of period at Dec. 31, 2018		$ 420,546		$ 5,014		$ 355,113	$ 66,816	$ (3,462)	$ 423,481		$ (2,935)
Net income (loss)	[1]			(489)		$ (23,969)			(24,458)
Net income (loss)	[1]	(24,458)
Distributions to unitholders													$ (32,487)			$ (663)	$ (33,150)	$ (33,150)	$ (30,000)	$ (600)	$ (29,400)	$ (30,000)
Partners' Capital Account, Unit-based Payment Arrangement, Number of Units						12
Partners' Capital Account, Unit-based Payment Arrangement, Amount		486				$ 486			486
Partners' Capital Account, Unit-based Compensation, Amortization		1,804				1,804			1,804
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent, Excluding General Partner Distributions		800		8		$ (76)		868	800		0
Unit-based awards amortization and vesting							0
Comprehensive income (loss) from unconsolidated investment and other		868
Balance, end of period (in shares) at Dec. 31, 2019						12,261
Balance, end of period at Dec. 31, 2019		336,028	$ (3,911)	3,270	$ (78)	$ 271,471	66,816	(2,594)	338,963	$ (3,911)	(2,935)			$ (3,833)
Net Income (Loss) Attributable to Noncontrolling Interest	[1]	0
Income attributable to preferred unitholders		(30,000)										$ 29,400			$ 600
Net income (loss)	[1]			(1,696)		(83,123)			(84,819)
Net income (loss)	[1]	(84,819)									0
Distributions to unitholders													(16,552)			(338)	(16,890)	(16,890)	(30,113)	(602)	(29,511)	(30,113)
Partners' Capital Account, Unit-based Compensation, Amortization						3,222
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent, Excluding General Partner Distributions		2,916		0		$ 0		2,916	2,916		0
Unit-based awards amortization and vesting		3,222					0		3,222
Comprehensive income (loss) from unconsolidated investment and other		2,916
Balance, end of period (in shares) at Dec. 31, 2020						12,261
Balance, end of period at Dec. 31, 2020		204,524		459		$ 136,927	66,816	322	204,524		0
Income attributable to preferred unitholders		(30,225)										29,600			600
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests		(1,909)		(97)		(4,747)			(4,844)		2,935
Net income (loss)	[2]			2,178		$ 106,724			108,902
Net income (loss)	[2]	108,902									0
Distributions to unitholders													$ (22,192)			$ (453)	$ (22,645)	$ (22,645)	$ (31,142)	(623)	$ (30,519)	$ (31,142)
Partners' Capital Account, Unit-based Payment Arrangement, Number of Units						90
Partners' Capital Account, Unit-based Payment Arrangement, Amount		0				$ 0			0
Partners' Capital Account, Unit-based Compensation, Amortization		2,647				2,647			2,647
Partners' Capital Account, Contributions		32							32											32
Partners' Capital Account, Warrant Settlement		(9,183)				$ 9,475	(18,852)		(9,183)											$ 194
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent, Excluding General Partner Distributions		2,889						2,889	2,889
Comprehensive income (loss) from unconsolidated investment and other		2,889
Balance, end of period (in shares) at Dec. 31, 2021						12,351
Balance, end of period at Dec. 31, 2021		256,024		$ 1,787		$ 203,062	$ 47,964	$ 3,211	$ 256,024		$ 0
Income attributable to preferred unitholders		$ (31,609)										$ (31,000)			$ (600)

[1] Net loss includes $30.0 million of income attributable to preferred unitholders that accumulated during the period, of which $29.4 million is allocated to the common unitholders and $0.6 million is allocated to the general partner.

[2] Net loss includes $30.2 million of income attributable to preferred unitholders that accumulated during the period, of which $29.6 million is allocated to the common unitholders and $0.6 million is allocated to the general partner. (3) Net income includes $31.6 million of income attributable to preferred unitholders that accumulated during the period, of which $31.0 million is allocated to the common unitholders and $0.6 million is allocated to the general partner.