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Note 19 - Segment Information (Tables)
12 Months Ended
Dec. 31, 2023
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
  

Year Ended December 31,

 
  

2023

  

2022

  

2021

 

Net sales:

            

Engineered Steel Pressure Pipe

 $296,381  $307,572  $259,823 

Precast Infrastructure and Engineered Systems

  147,974   150,093   73,490 

Total

 $444,355  $457,665  $333,313 
             

Gross profit:

            

Engineered Steel Pressure Pipe

 $42,427  $44,473  $31,281 

Precast Infrastructure and Engineered Systems

  35,215   41,382   12,973 

Total

 $77,642  $85,855  $44,254 
             

Depreciation and amortization expense:

            

Engineered Steel Pressure Pipe

 $9,000  $9,789  $9,524 

Precast Infrastructure and Engineered Systems

  6,241   6,807   3,738 
   15,241   16,596   13,262 

Corporate

  565   507   362 

Total

 $15,806  $17,103  $13,624 
             

Capital expenditures:

            

Engineered Steel Pressure Pipe

 $11,154  $8,211  $7,538 

Precast Infrastructure and Engineered Systems

  6,503   13,925   5,255 
   17,657   22,136   12,793 

Corporate

  634   693   469 

Total

 $18,291  $22,829  $13,262 
  

December 31,

 
  

2023

  

2022

 

Total assets:

        

Engineered Steel Pressure Pipe

 $307,856  $307,924 

Precast Infrastructure and Engineered Systems

  255,904   256,520 
   563,760   564,444 

Corporate

  34,121   36,896 

Total

 $597,881  $601,340