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