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, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2014 USD ($) Installment	Dec. 31, 2017 USD ($) Agreement	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Jun. 10, 2016 Bed	Aug. 27, 2015 Bed
Deferred Revenue Arrangement [Line Items]
Number of beds at the facility | Bed															112	600
Deferred Revenue - Noncurrent			$ 39,735				$ 53,437					$ 39,735	$ 53,437
Revenue			440,576	$ 442,845	$ 436,393	$ 445,684	464,134	$ 474,935	$ 463,331	$ 447,385		$ 1,765,498	1,849,785	$ 1,793,087
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
Number of distinct multiple element arrangements | Agreement												5
Revenue												$ 170,100	266,800	$ 244,200
Deferred revenue			$ 53,400				$ 67,000					$ 53,400	$ 67,000
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