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RESTRUCTURING CHARGES - By segment (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2022
Restructuring charges        
Restructuring charges   $ 2,903 $ 8,450  
Severance costs        
Restructuring charges        
Restructuring charges   1,717 6,952  
Property disposal costs        
Restructuring charges        
Loss on sale     915  
Impairment loss     583  
Restructuring charges   964 1,498  
Organizational Restructuring        
Restructuring charges        
Restructuring charges     1,695  
Expected additional charges       $ 0
Organizational Restructuring | Severance costs        
Restructuring charges        
Restructuring charges     1,695  
Pandemic Restructuring        
Restructuring charges        
Restructuring charges   1,717 5,257  
Pandemic Restructuring | Severance costs        
Restructuring charges        
Restructuring charges $ 5,300 1,717 5,257  
2021 Property Restructuring        
Restructuring charges        
Restructuring charges   929    
Expected additional charges       $ 0
2020 Property Restructuring        
Restructuring charges        
Loss on sale     915  
Impairment loss     583  
Restructuring charges   35    
2020 Property Restructuring | Property disposal costs        
Restructuring charges        
Restructuring charges     1,500  
Other Restructuring        
Restructuring charges        
Restructuring charges   222    
Corporate        
Restructuring charges        
Restructuring charges   1,213 3,644  
Corporate | Organizational Restructuring        
Restructuring charges        
Restructuring charges     612  
Corporate | Pandemic Restructuring        
Restructuring charges        
Restructuring charges   956 1,534  
Corporate | 2020 Property Restructuring        
Restructuring charges        
Loss on sale     915  
Impairment loss     583  
Restructuring charges   35    
Corporate | Other Restructuring        
Restructuring charges        
Restructuring charges   222    
Contract Operations | Operating        
Restructuring charges        
Restructuring charges   1,545 2,963  
Contract Operations | Operating | Organizational Restructuring        
Restructuring charges        
Restructuring charges     458  
Contract Operations | Operating | Pandemic Restructuring        
Restructuring charges        
Restructuring charges   616 2,505  
Contract Operations | Operating | 2021 Property Restructuring        
Restructuring charges        
Restructuring charges   929    
Aftermarket Services | Operating        
Restructuring charges        
Restructuring charges   145 1,843  
Aftermarket Services | Operating | Organizational Restructuring        
Restructuring charges        
Restructuring charges     625  
Aftermarket Services | Operating | Pandemic Restructuring        
Restructuring charges        
Restructuring charges   $ 145 $ 1,218