Business Segments and Geographic Information - Schedule of Operating and Reporting Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenues:
Revenues	$ 607,185	$ 593,891	$ 1,212,857	$ 1,202,100
Operating income from segments:
Operating income from segments	132,343	134,072	264,975	276,866
General and Administrative Expenses	(52,198)	(41,692)	(105,268)	(91,826)
Operating income	80,145	92,380	159,707	185,040
Operating Segments
Revenues:
Revenues	607,185	593,891	1,212,857	1,202,100
Operating income from segments:
Operating income from segments	132,343	134,072	264,975	276,866
Operating Segments | U.S. Secure Services
Revenues:
Revenues	402,097	372,543	803,037	738,500
Operating income from segments:
Operating income from segments	79,769	67,058	159,010	131,402
Operating Segments | Electronic Monitoring and Supervision Services
Revenues:
Revenues	84,745	108,029	171,529	240,669
Operating income from segments:
Operating income from segments	38,277	55,121	76,457	119,809
Operating Segments | Reentry Services
Revenues:
Revenues	12,155	10,186	24,897	20,372
Operating income from segments:
Operating income from segments	68,960	67,594	136,790	131,817
Operating Segments | International Services
Revenues:
Revenues	2,142	1,707	4,611	5,283
Operating income from segments:
Operating income from segments	51,383	45,725	101,501	91,114
Segment Reconciling Items
Operating income from segments:
General and Administrative Expenses	$ (52,198)	$ (41,692)	$ (105,268)	$ (91,826)