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Note 13 - Segment Information (Tables)
9 Months Ended
Sep. 30, 2023
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
  

Three Months Ended September 30,

  

Nine Months Ended September 30,

 
  

2023

  

2022

  

2023

  

2022

 

Net sales:

                

Engineered Steel Pressure Pipe

 $80,493  $83,663  $221,294  $235,446 

Precast Infrastructure and Engineered Systems

  38,229   39,321   112,897   115,391 

Total

 $118,722  $122,984  $334,191  $350,837 
                 

Gross profit:

                

Engineered Steel Pressure Pipe

 $10,911  $14,196  $31,264  $32,490 

Precast Infrastructure and Engineered Systems

  8,383   10,922   27,088   31,494 

Total

 $19,294  $25,118  $58,352  $63,984