Deferred Revenue - Additional Information (Detail) $ in Thousands	1 Months Ended		3 Months Ended									12 Months Ended
	Oct. 31, 2016	Sep. 30, 2014 Facility	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2014 USD ($) Installment	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Deferred Revenue Arrangement [Line Items]
Revenue			$ 497,809	$ 508,522	$ 490,294	$ 484,064	$ 482,193	$ 462,728	$ 449,929	$ 440,916		$ 1,980,689	$ 1,835,766	$ 1,765,498
South Texas Family Residential Center
Deferred Revenue Arrangement [Line Items]
Management contract, expiration date	2021-09
ICE
Deferred Revenue Arrangement [Line Items]
Deferred Revenue - Noncurrent											$ 70,000
Revenue												170,600	170,600	$ 170,100
Deferred revenue			$ 26,100				$ 39,700					$ 26,100	$ 39,700
ICE | Installment Payment
Deferred Revenue Arrangement [Line Items]
Amount to be settled as an installment											$ 35,000
Number of installments | Installment											2
Installments due											Dec. 31, 2014
Maximum | South Texas Family Residential Center
Deferred Revenue Arrangement [Line Items]
Number of beds at the facility | Facility		2,400
Management contract, initial term		4 years
Minimum | South Texas Family Residential Center
Deferred Revenue Arrangement [Line Items]
Agreement notice period for termination		60 days