Business Segments (Tables)

6 Months Ended

Jun. 30, 2020

Segment Reporting [Abstract]

Segment Reporting by Segment

Three Months Ended June 30, 2020	Operating Revenues		Intersegment Revenues Eliminations		Operating Revenues after Eliminations		Depreciation and Amortization		Operating Income (Loss) after Eliminations		Capital Expenditures and Plant Turnaround Costs
Terminalling and storage	46,976		(1,542)		45,434		7,272		2,969		3,427
Transportation	35,259		(3,774)		31,485		4,328		(2,078)		772
Sulfur services	33,420		—		33,420		3,131		8,814		1,739
Natural gas liquids	30,300		(1)		30,299		612		2,616		70
Indirect selling, general and administrative	—		—		—		—		(4,361)		—
Total	$	145,955	$	(5,317)	$	140,638	$	15,343	$	7,960	$	6,008

Three Months Ended June 30, 2019	Operating Revenues		Intersegment Revenues Eliminations		Operating Revenues after Eliminations		Depreciation and Amortization		Operating Income (Loss) after Eliminations		Capital Expenditures and Plant Turnaround Costs
Terminalling and storage	54,351		(1,603)		52,748		7,826		4,254		3,668
Transportation	47,233		(5,912)		41,321		3,778		(2,629)		746
Sulfur services	35,856		—		35,856		2,854		7,528		3,273
Natural gas liquids	57,398		—		57,398		629		456		940
Indirect selling, general and administrative	—		—		—		—		(4,599)		—
Total	$	194,838	$	(7,515)	$	187,323	$	15,087	$	5,010	$	8,627

Six Months Ended June 30, 2020	Operating Revenues		Intersegment Revenues Eliminations		Operating Revenues after Eliminations		Depreciation and Amortization		Operating Income (Loss) after Eliminations		Capital Expenditures and Plant Turnaround Costs
Terminalling and storage	$	98,110	$	(3,268)	$	94,842	$	14,728	$	3,727	$	7,022
Transportation	80,433		(10,007)		70,426		8,608		(7,099)		4,698
Sulfur services	61,756		(13)		61,743		6,025		22,672		4,874
Natural gas liquids	112,515		(5)		112,510		1,221		12,993		175
Indirect selling, general and administrative	—		—		—		—		(8,733)		—
Total	$	352,814	$	(13,293)	$	339,521	$	30,582	$	23,560	$	16,769

Six Months Ended June 30, 2019	Operating Revenues		Intersegment Revenues Eliminations		Operating Revenues after Eliminations		Depreciation and Amortization		Operating Income (Loss) after Eliminations		Capital Expenditures and Plant Turnaround Costs
Terminalling and storage	$	110,243	$	(3,324)	$	106,919	$	15,663	$	9,069	$	9,013
Transportation	92,419		(13,303)		79,116		7,348		(6,509)		3,207
Sulfur services	67,449		—		67,449		5,722		13,908		5,479
Natural gas liquids	173,872		—		173,872		1,255		7,314		1,227
Indirect selling, general and administrative	—		—		—		—		(9,166)		—
Total	$	443,983	$	(16,627)	$	427,356	$	29,988	$	14,616	$	18,926

Assets by Segment

The Partnership's assets by reportable segment as of June 30, 2020 and December 31, 2019, are as follows:

	June 30, 2020		December 31, 2019
Total assets:
Terminalling and storage	$	286,233	$	292,136
Transportation	163,951		170,045
Sulfur services	104,113		110,780
Natural gas liquids	62,682		94,195
Total assets	$	616,979	$	667,156