Business Segments and Geographic Information - Schedule of Operating and Reporting Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenues:
Revenues	$ 593,891	$ 588,177	$ 1,202,100	$ 1,139,362
Operating income from segments:
Operating income from segments	134,072	144,370	276,866	274,456
General and Administrative Expenses	(41,692)	(49,296)	(91,826)	(97,856)
Operating income	92,380	95,074	185,040	176,600
Operating Segments
Revenues:
Revenues	593,891	588,177	1,202,100	1,139,362
Operating income from segments:
Operating income from segments	134,072	144,370	276,866	274,456
Operating Segments | U.S. Secure Services
Revenues:
Revenues	372,543	353,402	738,500	704,647
Operating income from segments:
Operating income from segments	67,058	72,824	131,402	147,532
Operating Segments | Electronic Monitoring and Supervision Services
Revenues:
Revenues	108,029	121,484	240,669	209,405
Operating income from segments:
Operating income from segments	55,121	54,245	119,809	93,165
Operating Segments | Reentry Services
Revenues:
Revenues	67,594	65,720	131,817	127,151
Operating income from segments:
Operating income from segments	10,186	14,207	20,372	24,211
Operating Segments | International Services
Revenues:
Revenues	45,725	47,571	91,114	98,159
Operating income from segments:
Operating income from segments	1,707	3,094	5,283	9,548
Segment Reconciling Items
Operating income from segments:
General and Administrative Expenses	$ (41,692)	$ (49,296)	$ (91,826)	$ (97,856)