Partners' Capital (Deficit) - Reconciliation of net income to partners interest in net income (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018		Dec. 31, 2017
Reconciliation of Net Income from Continuing and Discontinued Operations [Line Items]
Income from continuing operations	$ 6,642	$ 13,250	$ (10,614)	$ (4,758)	$ 1,553	$ (7,880)	$ (9,453)	$ 7,949	$ 4,520	$ (7,831)	[1],[2]	$ (1,183)	[1],[2]
Less pre-acquisition income allocated to Parent									0	11,550	[2]	2,781	[2]
Income from discontinued operations	$ 0	$ 0	$ (180,568)	$ 1,102	$ 1,029	$ 50,443	$ 4,927	$ 7,087	(179,466)	63,486	[1],[2]	21,099	[1],[2]
Less general partner’s interest in net income:
Less income allocable to unvested restricted units									(41)	(28)	[2]	(42)	[2]
Limited partner's interest in net income									$ (171,488)	$ 43,195	[2],[3]	$ 16,750	[2],[3]
Basic weighted average limited partner units outstanding (in shares)									38,658,881	38,907,000	[3]	38,101,583	[3]
Dilutive effect of restricted units issued (in shares)									0	15,678		63,318
Total weighted average limited partner diluted units outstanding (in shares)									38,658,881	38,922,678	[3]	38,164,901	[3]
Continuing operations:
Reconciliation of Net Income from Continuing and Discontinued Operations [Line Items]
Income from continuing operations									$ 4,520	$ (7,831)		$ (1,183)
Less pre-acquisition income allocated to Parent									0	(11,550)		(2,781)
Less general partner’s interest in net income:
Distributions payable on behalf of IDRs									0	0		0
Distributions payable on behalf of general partner interest									(20)	(689)		(363)
Distributions Payable To The General Partner Interest In Excess Of Earnings Allocable To The General Partner Interest									111	302		284
Less income allocable to unvested restricted units									(1)	(12)		(10)
Limited partner's interest in net income									4,430	(18,982)		(3,875)
Discontinued operations:
Reconciliation of Net Income from Continuing and Discontinued Operations [Line Items]
Income from discontinued operations									(179,466)	63,486		21,099
Less general partner’s interest in net income:
Distributions payable on behalf of IDRs									0	0		0
Distributions payable on behalf of general partner interest									806	2,258		1,932
Distributions Payable To The General Partner Interest In Excess Of Earnings Allocable To The General Partner Interest									(4,396)	(989)		(1,510)
Less income allocable to unvested restricted units									42	40		52
Limited partner's interest in net income									$ (175,918)	$ 62,177		$ 20,625

[1] Financial information has been revised to include results attributable to MTI acquired from Martin Resource Management Corporation. See Note 2 – Significant Accounting Policies and Practices.

[2] Financial information has been revised to include results attributable to MTI acquired from Martin Resource Management Corporation. See Note 2 – Significant Accounting Policies and Practices.

[3]  Financial information has been revised to include results attributable to MTI acquired from Martin Resource Management Corporation. See Note 2 – Significant Accounting Policies and Practices.