Quarterly report pursuant to Section 13 or 15(d)


9 Months Ended
Sep. 30, 2021
Inventory Disclosure [Abstract]  
Inventories InventoriesInventories consist of raw sand and processed sand available for sale, chemicals and other products sold as a bi-product of completion and production operations and supplies used in performing services. Inventory is stated at the lower of cost or net realizable value on an average cost basis. The Company assesses the valuation of its inventories based upon specific usage, future utility, obsolescence and other factors. A summary of the Company’s inventories is shown below (in thousands):
September 30, December 31,
2021 2020
Supplies $ 5,165  $ 6,312 
Raw materials 731  613 
Work in process 2,900  3,478 
Finished goods 642  1,617 
Total inventories $ 9,438  $ 12,020