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Inventories, net (Tables)
12 Months Ended
Dec. 31, 2019
Inventory Disclosure [Abstract]  
Schedule of Inventory

Inventories at December 31, 2019 and 2018 were as follows (in thousands):
 
December 31,
 
2019
 
2018
 
 
 
 
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