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Note 15 - Segment Information (Tables)
9 Months Ended
Sep. 30, 2022
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
  

Three Months Ended September 30,

  

Nine Months Ended September 30,

 
  

2022

  

2021

  

2022

  

2021

 

Net sales:

                

Engineered Steel Pressure Pipe

 $83,663  $69,439  $235,446  $188,244 

Precast Infrastructure and Engineered Systems

  39,321   15,204   115,391   42,522 

Total

 $122,984  $84,643  $350,837  $230,766 
                 

Gross profit:

                

Engineered Steel Pressure Pipe

 $14,196  $8,844  $32,490  $22,613 

Precast Infrastructure and Engineered Systems

  10,922   3,519   31,494   8,063 

Total

 $25,118  $12,363  $63,984  $30,676