Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Inventory [Line Items]
Raw materials	$ 118,800	$ 114,589
Total inventories	149,989	149,571
Fluids Systems
Inventory [Line Items]
Raw materials	114,122	110,623
Industrial Solutions
Inventory [Line Items]
Raw materials	4,678	3,966
Blended fluids systems components
Inventory [Line Items]
Finished goods	24,962	29,244
Finished goods - mats
Inventory [Line Items]
Finished goods	$ 6,227	$ 5,738

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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