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Inventories (Tables)
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Text Block [Abstract]    
Summary of Detailed Information About Inventories
Inventories consisted of the following:
                 
    
March 31, 2022
      December 31, 2021  
Direct materials
   
$
87,331
 
    $ 83,943  
Repair and distribution parts
   
 
58,056
 
      54,156  
Work-in-progress
   
 
47,056
 
      31,298  
Equipment
   
 
3,116
 
      3,290  
    
 
 
     
 
 
  
Total inventories
   
$
195,559
 
    $ 172,687  
    
 
 
     
 
 
  
                 
    
March 31, 2022
      December 31, 2021  
Work-in-progress
related to finance leases
   
$
32,377
 
    $ 36,169  
Inventories consists of the following:
 
December 31,
   
2021
      2020  
Direct materials
   
$
83,943
 
    $ 119,342  
Repair and distribution parts
   
 
54,156
 
      52,125  
Work-in-progress
   
 
31,298
 
      25,185  
Equipment
   
 
3,290
 
      15,599  
    
 
 
     
 
 
  
Total inventories
   
$
172,687
 
    $ 212,251  
    
 
 
     
 
 
  
     
December 31,
   
2021
      2020  
Work-in-progress
related to finance leases
   
$
36,169
 
    $ —