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Asset Retirement Obligations (Tables)
 12 Months Ended
Dec. 31, 2021
Asset Retirement Obligation Disclosure [Abstract]  
Summary of Activity Associated with Asset Retirement Obligations
The following table summarizes the activity associated with asset retirement obligations of the Company for the years ended December 31, 2021, 2020, and 2019:
 
    
Year ended December 31,
  
    
2021
     
2020
     
2019
  
Asset retirement obligations—beginning of year
    $ 5,689      $ 5,928      $ 5,399  
Accretion expense
      (160 )      320        391  
New asset retirement obligations
      —           350        177  
Decommissioning
      (228 )       (909 )       (39 ) 
    
 
 
     
 
 
     
 
 
  
Asset retirement obligations—end of year
    $ 5,301      $ 5,689      $ 5,928