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Commitments and Contingencies - Additional Information (Details)
$ in Millions
3 Months Ended
Mar. 31, 2020
USD ($)
bed
facility
Dec. 19, 2017
Claim
Commitments and Contingencies [Line Items]    
Estimate of possible loss $ 19.1  
Estimated construction capital project cost 61.0  
Cost already spent on existing capital projects 41.0  
Remaining capital required for capital projects $ 20.0  
Number of vacant beds at idle facilities marketed to potential customers | bed 1,000  
Number of marketed idle facilities | facility 2  
Property and Equipment, Net    
Commitments and Contingencies [Line Items]    
Carrying values of idle facilities marketed to potential customers $ 20.7  
Pending Litigation | Immigration Detainees Against Company    
Commitments and Contingencies [Line Items]    
Number of claims filed | Claim   3
WASHINGTON | Pending Litigation | Immigration Detainees Against Company    
Commitments and Contingencies [Line Items]    
Number of claims filed | Claim   2
CALIFORNIA | Pending Litigation | Immigration Detainees Against Company    
Commitments and Contingencies [Line Items]    
Number of claims filed | Claim   1