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Inventories (Tables)
9 Months Ended
Sep. 30, 2019
Inventory Disclosure [Abstract]  
Schedule of Inventories
Inventories
Sand inventories consisted of the following:
 
September 30, 2019
 
December 31, 2018
Raw material
$
391

 
$
1,201

Work in progress
10,381

 
10,070

Finished goods
4,351

 
4,648

Spare parts
803

 
1,356

Total sand inventory
$
15,926

 
$
17,275

SmartSystems inventory represents work in progress inventory related to existing arrangements at the time the Company acquired Quickthree and consisted of the following:
 
September 30, 2019
 
December 31, 2018
Work in progress
$

 
$
1,300

Total SmartSystems inventory
$

 
$
1,300

 
 
 
 
Total inventory
$
15,926

 
$
18,575