XML 51 R36.htm IDEA: XBRL DOCUMENT v3.20.4
Note 8 - Components of Working Capital Accounts (Tables)
 12 Months Ended
Dec. 31, 2020
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
    December 31,   December 31,
    2020   2019
         
Inventories                
Work-in-progress   $
103,969
     $
66,514
  
Finished goods    
16,531
      
15,347
  
Supplies and other    
21,479
      
12,650
  
                 
    $
141,979
     $
94,511
  
                 
Accrued liabilities                
Accrued payroll and benefits   $
160,795
     $
94,010
  
Value appreciation plans    
35
      
6,510
  
Customer advances    
2,730
      
1,454
  
Other    
87,632
      
63,470
  
    $
251,192
     $
165,444