Commitments, Contingencies and Other Matters - Summary of Idled Facilities and Respective Carrying Values (Details) - Property and Equipment, Net $ in Thousands	9 Months Ended
	Sep. 30, 2021 USD ($) bed
Commitments and Contingencies [Line Items]
Number of beds in detention facility | bed	7,380
Net Carrying Value | $	$ 210,863
D. Ray James Correctional Facility | Secure Services
Commitments and Contingencies [Line Items]
Number of beds in detention facility | bed	1,900
Date Idled	2021
Net Carrying Value | $	$ 53,212
Rivers Correctional Facility | Secure Services
Commitments and Contingencies [Line Items]
Number of beds in detention facility | bed	1,450
Date Idled	2021
Net Carrying Value | $	$ 40,081
McFarland Female Community Reentry Facility | Secure Services
Commitments and Contingencies [Line Items]
Number of beds in detention facility | bed	300
Date Idled	2020
Net Carrying Value | $	$ 11,665
Perry County Correctional Facility | Secure Services
Commitments and Contingencies [Line Items]
Number of beds in detention facility | bed	690
Date Idled	2015
Net Carrying Value | $	$ 11,272
Great Plains Correctional Facility | Secure Services
Commitments and Contingencies [Line Items]
Number of beds in detention facility | bed	1,940
Date Idled	2021
Net Carrying Value | $	$ 69,097
Coleman Hall | GEO Care
Commitments and Contingencies [Line Items]
Number of beds in detention facility | bed	350
Date Idled	2017
Net Carrying Value | $	$ 8,238
Cheyenne Mountain Recovery Center | GEO Care
Commitments and Contingencies [Line Items]
Number of beds in detention facility | bed	750
Date Idled	2020
Net Carrying Value | $	$ 17,298