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Note 4 - Inventories, Net (Tables)
6 Months Ended
Jun. 30, 2021
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

June 30,

 

December 31,

  

2021

 

2020

Pipe and connectors, net of allowance of $15,662 and $16,819, respectively

 $28,851 $22,642

Finished goods, net of allowance of $84 and $84, respectively

 18,997 22,715

Work in progress

 1,891 1,730

Raw materials, components and supplies, net of allowance of $106 and none, respectively

 44,941 34,631

Total inventories, net

 $94,680 $81,718