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Note 2 - Revenues (Tables)
6 Months Ended
Jun. 30, 2021
Notes Tables  
Disaggregation of Revenue [Table Text Block]
  

Three Months Ended June 30,

  

Six Months Ended June 30,

 
  

2021

  

2020

  

2021

  

2020

 

Heavy Fabrications

 $35,830  $43,614  $58,607  $81,983 

Gearing

  7,404   6,922   12,753   13,149 

Industrial Solutions

  3,541   4,397   8,145   8,435 

Eliminations

  (284)  (7)  (286)  (7)

Consolidated

 $46,491  $54,926  $79,219  $103,560