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Note 17 - Segment Information (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
  

Year Ended December 31,

 
  

2021

  

2020

  

2019

 

Net sales:

            

Engineered Steel Pressure Pipe

 $259,823  $241,690  $279,317 

Precast Infrastructure and Engineered Systems

  73,490   44,217   - 

Total

 $333,313  $285,907  $279,317 
             

Gross profit:

            

Engineered Steel Pressure Pipe

 $31,281  $44,293  $47,184 

Precast Infrastructure and Engineered Systems

  12,973   6,226   - 

Total

 $44,254  $50,519  $47,184 
             

Depreciation and amortization expense:

            

Engineered Steel Pressure Pipe

 $9,524  $10,746  $12,363 

Precast Infrastructure and Engineered Systems

  3,738   3,407   - 
   13,262   14,153   12,363 

Corporate

  362   398   350 

Total

 $13,624  $14,551  $12,713 
             

Capital expenditures:

            

Engineered Steel Pressure Pipe

 $7,538  $12,031  $8,033 

Precast Infrastructure and Engineered Systems

  5,255   1,397   - 
   12,793   13,428   8,033 

Corporate

  469   585   552 

Total

 $13,262  $14,013  $8,585 
  

December 31,

 
  

2021

  

2020

 

Total assets:

        

Engineered Steel Pressure Pipe

 $308,819  $249,680 

Precast Infrastructure and Engineered Systems

  228,627   77,765 
   537,446   327,445 

Corporate

  10,233   45,570 

Total

 $547,679  $373,015