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Inventories (Tables)
3 Months Ended
Mar. 31, 2020
Inventory Disclosure [Abstract]  
Components of Inventory

Components of inventories at March 31, 2020 and December 31, 2019 were as follows: 
 
March 31, 2020
 
December 31, 2019
Natural gas liquids
$
3,687

 
$
19,097

Sulfur
4,443

 
4,586

Fertilizer
14,549

 
15,852

Lubricants
20,126

 
18,925

Other
4,025

 
4,080

 
$
46,830

 
$
62,540