CONSOLIDATED AND CONDENSED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Revenues:
Revenues		$ 198,883	$ 240,033
Cost of products sold: (excluding depreciation and amortization)
Cost of products sold		108,810	152,757
Expenses:
Operating expenses	[1]	51,282	51,849
Selling, general and administrative	[1]	10,462	10,200
Depreciation and amortization		15,239	14,901
Total costs and expenses		185,793	229,707
Other operating income (loss), net		2,510	(720)
Operating income		15,600	9,606
Other income (expense):
Interest expense, net		(9,925)	(13,671)
Gain on retirement of senior unsecured notes		3,484	0
Other, net		3	3
Total other expense		(6,438)	(13,668)
Net income (loss) before taxes		9,162	(4,062)
Income tax expense		(347)	(696)
Income (loss) from continuing operations		8,815	(4,758)
Income from discontinued operations, net of income taxes		0	1,102
Net income (loss)		8,815	(3,656)
Less general partner's interest in net (income) loss		(176)	73
Less (income) loss allocable to unvested restricted units		(55)	2
Limited partners' interest in net income (loss)		8,584	(3,581)
Terminalling and storage
Revenues:
Revenues	[1]	20,474	23,104
Transportation
Revenues:
Revenues	[1]	38,941	37,795
Sulfur services
Revenues:
Revenues		2,915	2,859
Product sales
Revenues:
Revenues	[1]	136,553	176,275
Natural gas liquids
Revenues:
Revenues		82,211	116,474
Cost of products sold: (excluding depreciation and amortization)
Cost of products sold	[1]	69,835	106,190
Sulfur services
Revenues:
Revenues		25,408	28,734
Cost of products sold: (excluding depreciation and amortization)
Cost of products sold	[1]	15,295	19,696
Terminalling and storage
Revenues:
Revenues		28,934	31,067
Cost of products sold: (excluding depreciation and amortization)
Cost of products sold	[1]	$ 23,680	$ 26,871

[1] Related Party Transactions Included Above   Three Months Ended   March 31,   2020   2019 Revenues:*       Terminalling and storage $ 15,874
  $ 18,972
Transportation 5,894
  5,643
Product Sales 92
  421
Costs and expenses:*       Cost of products sold: (excluding depreciation and amortization)       Sulfur services 2,767
  2,574
Terminalling and storage 5,777
  5,909
Expenses:       Operating expenses 21,771
  22,536
Selling, general and administrative 8,312
  8,535