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Inventories (Tables)
12 Months Ended
Dec. 31, 2019
Inventory Disclosure [Abstract]  
Schedule of Major Components of Inventories
The major components of inventories were as follows:
 
 
December 31,
 
2019
 
2018
Petroleum products
$
2,721

 
$
12,203

Crude oil
5,271

 
8,379

Caustic soda
5,965

 
10,372

NaHS
10,845

 
12,400

Raw materials - Alkali Operations
6,238

 
5,952

Work-in-process - Alkali Operations
8,579

 
2,322

Finished goods, net - Alkali Operations
14,168

 
11,402

Materials and supplies, net - Alkali Operations
11,350

 
10,490

Other

 
11

Total
$
65,137

 
$
73,531