CONSOLIDATED AND CONDENSED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues:
Revenues		$ 219,047	$ 193,128	$ 719,822	$ 640,375
Cost of products sold: (excluding depreciation and amortization)
Cost of products sold		154,510	124,456	503,910	406,549
Expenses:
Operating expenses	[1]	32,628	43,552	95,592	109,478
Selling, general and administrative	[1]	9,257	9,085	27,339	27,816
Depreciation and amortization		18,741	20,286	58,842	65,948
Total costs and expenses		215,136	197,379	685,683	609,791
Other operating loss		(384)	(187)	(876)	(327)
Operating income (loss)		3,527	(4,438)	33,263	30,257
Other income (expense):
Interest expense, net		(13,140)	(12,538)	(39,591)	(34,677)
Other, net		18	55	18	605
Total other expense		(13,122)	(12,483)	(39,573)	(34,072)
Net loss before taxes		(9,595)	(16,921)	(6,310)	(3,815)
Income tax expense		(91)	(108)	(372)	(301)
Loss from continuing operations		(9,686)	(17,029)	(6,682)	(4,116)
Income from discontinued operations, net of income taxes		49,132	743	51,700	2,402
Net income (loss)		39,446	(16,286)	45,018	(1,714)
Less general partner's interest in net (income) loss		(789)	325	(900)	34
Less (income) loss allocable to unvested restricted units		(27)	38	(29)	0
Limited partners' interest in net income (loss)		38,630	(15,923)	44,089	(1,680)
Terminalling and storage
Revenues:
Revenues	[1]	24,354	25,752	72,508	75,105
Marine transportation
Revenues:
Revenues	[1]	12,727	11,407	36,920	36,661
Natural gas services
Revenues:
Revenues	[1]	11,232	14,253	40,392	43,756
Sulfur services
Revenues:
Revenues		2,787	2,850	8,361	8,550
Product sales
Revenues:
Revenues	[1]	167,947	138,866	561,641	476,303
Natural gas services
Revenues:
Revenues	[1]	101,919	83,831	351,725	284,154
Cost of products sold: (excluding depreciation and amortization)
Cost of products sold	[1]	99,346	77,368	329,945	255,745
Sulfur services
Revenues:
Revenues	[1]	27,981	24,174	98,565	95,728
Cost of products sold: (excluding depreciation and amortization)
Cost of products sold	[1]	21,363	19,716	73,998	65,406
Terminalling and storage
Revenues:
Revenues	[1]	38,047	30,861	111,351	96,421
Cost of products sold: (excluding depreciation and amortization)
Cost of products sold	[1]	$ 33,801	$ 27,372	$ 99,967	$ 85,398

[1] Related Party Transactions Included Above   Three Months Ended   Nine Months Ended   September 30,   September 30,   2018   2017   2018   2017 Revenues:*               Terminalling and storage $ 19,619
  $ 21,910
  $ 60,151
  $ 61,945
Marine transportation 4,009
  4,098
  11,727
  12,610
Natural gas services —
  4
  —
  122
Product Sales 180
  828
  1,248
  2,982
Costs and expenses:*               Cost of products sold: (excluding depreciation and amortization)               Natural gas services 2,856
  3,033
  10,273
  14,836
Sulfur services 4,337
  3,555
  13,208
  10,997
Terminalling and storage 7,392
  4,817
  21,959
  14,003
Expenses:               Operating expenses 14,051
  15,858
  41,774
  48,686
Selling, general and administrative 6,834
  6,495
  21,053
  20,563