Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Inventory [Line Items]
Raw materials	$ 129,074	$ 146,363
Total inventory	187,979	196,897
Fluids systems
Inventory [Line Items]
Raw materials	124,623	141,314
Mats and integrated services
Inventory [Line Items]
Raw materials	4,451	5,049
Finished goods	18,013	10,992
Blended fluids systems components
Inventory [Line Items]
Finished goods	$ 40,892	$ 39,542

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process.

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