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Inventories - Schedule of Inventories (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Inventory [Line Items]    
Total sand inventory $ 21,415 $ 18,575
Sand [Member]    
Inventory [Line Items]    
Raw material 527 1,201
Work in progress 14,173 10,070
Finished goods 4,097 4,648
Spare parts 2,618 1,356
Total sand inventory $ 21,415 $ 17,275