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Note 19 - Segment Information (Tables)
12 Months Ended
Dec. 31, 2022
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   

Year Ended December 31,

 
   

2022

   

2021

   

2020

 

Net sales:

                       

Engineered Steel Pressure Pipe

  $ 307,572     $ 259,823     $ 241,690  

Precast Infrastructure and Engineered Systems

    150,093       73,490       44,217  

Total

  $ 457,665     $ 333,313     $ 285,907  
                         

Gross profit:

                       

Engineered Steel Pressure Pipe

  $ 44,473     $ 31,281     $ 44,293  

Precast Infrastructure and Engineered Systems

    41,382       12,973       6,226  

Total

  $ 85,855     $ 44,254     $ 50,519  
                         

Depreciation and amortization expense:

                       

Engineered Steel Pressure Pipe

  $ 9,789

 

  $ 9,524     $ 10,746  

Precast Infrastructure and Engineered Systems

    6,807

 

    3,738       3,407  
      16,596

 

    13,262       14,153  

Corporate

    507

 

    362       398  

Total

 

$

17,103

 

  $ 13,624     $ 14,551  
                         

Capital expenditures:

                       

Engineered Steel Pressure Pipe

  $ 8,211     $ 7,538     $ 12,031  

Precast Infrastructure and Engineered Systems

    13,925       5,255       1,397  
      22,136       12,793       13,428  

Corporate

    693       469       585  

Total

  $ 22,829     $ 13,262     $ 14,013  
   

December 31,

 
   

2022

   

2021

 

Total assets:

               

Engineered Steel Pressure Pipe

  $ 307,924     $ 308,819  

Precast Infrastructure and Engineered Systems

    256,520       228,627  
      564,444       537,446  

Corporate

    36,896       10,233  

Total

  $ 601,340     $ 547,679