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Inventories, net (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Inventory Disclosure [Abstract]
Pipe and connectors, net of allowance of $18,287 and $21,270, respectively	$ 21,779	$ 18,026
Finished goods, net of allowance of $485 and $1,354, respectively	25,628	22,608
Work in progress	3,663	8,285
Raw materials, components and supplies	27,759	20,463
Total inventories, net	78,829	69,382
Pipe and connectors
Inventory [Line Items]
Allowance	18,287	21,270
Finished goods
Inventory [Line Items]
Allowance	$ 485	$ 1,354

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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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