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Revenue (Tables)
 12 Months Ended
Dec. 31, 2019
Revenue from Contract with Customer [Abstract]  
Disaggregation of Revenue

The following table disaggregates our revenue by major source:
 
2019
 
2018
 
2017
 
 
 
 
 
 
Terminalling and storage segment
 
 
 
 
 
Lubricant product sales
$
122,257

 
$
145,236

 
$
130,392

Throughput and storage
87,397

 
96,204

 
99,643

 
$
209,654

 
$
241,440

 
$
230,035

Transportation segment
 
 
 
 
 
Land transportation
$
98,895

 
$
99,751

 
$
86,771

Inland transportation
54,834

 
44,580

 
42,874

Offshore transportation
5,893

 
5,790

 
5,705

 
$
159,622

 
$
150,121

 
$
135,350

Sulfur service segment
 
 
 
 
 
Sulfur product sales
$
30,135

 
$
46,347

 
$
49,204

Fertilizer product sales
69,771

 
75,041

 
74,528

Sulfur services
11,434

 
11,148

 
10,952

 
$
111,340

 
$
132,536

 
$
134,684

Natural gas liquids segment
 
 
 
 
 
Natural gas liquids product sales
$
366,502

 
$
496,007

 
$
473,317

 
$
366,502

 
$
496,007

 
$
473,317
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
The table below includes estimated minimum revenue expected to be recognized in the future related to performance obligations that are unsatisfied at the end of the reporting period. The Partnership applies the practical expedient in ASC 606-10-50-14(a) and does not disclose information about remaining performance obligations that have original expected durations of one year or less.
 
2020
 
2021
 
2022
 
2023
 
2024
 
Thereafter
 
Total
Terminalling and storage
 
 
 
 
 
 
 
 
 
 
 
 
 
Throughput and storage
$
49,405

 
$
46,694

 
$
42,735

 
$
42,854

 
$
44,197

 
$
348,427

 
$
574,312

Sulfur services
 
 
 
 
 
 
 
 
 
 
 
 
 
Sulfur product sales
4,898

 
1,181

 
295

 
—

 
—

 
—

 
6,374

Total
$
54,303

 
$
47,875

 
$
43,030

 
$
42,854

 
$
44,197

 
$
348,427

 
$
580,686