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SUPPLEMENTAL CASH FLOW INFORMATION (Tables)
 12 Months Ended
Dec. 31, 2021
Supplemental Cash Flow Information
Years Ended December 31,
   
2021
     
2020
     
2019
  
Interest paid
   
$
913
 
    $ 1,844      $ 4,341  
Income taxes net of refunds
   
$
124,984
 
    $ 70,889      $ 70,095  
Common stock issued for MIS
   
$
997
 
      —          —    
Common stock issued for ACME
   
$
2,551
 
      —          —    
Common stock issued for N&S
   
 
—
 
    $ (161 )     $ 4,032  
Common stock issued for PPI
   
 
—
 
      —        $ 58,344  
Common stock issued for DASCO
   
 
—
 
      —        $ 6,891