Idled Facilities and Respective Carrying Values Excluding Equipment and Other Assets (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) Bed	Dec. 31, 2016 USD ($)
Facility Activations Developments And Closures [Line Items]
Design Capacity	88,400
Prairie Correctional Facility
Facility Activations Developments And Closures [Line Items]
Design Capacity	1,600
Date Idled	2010
Net Carrying Value | $	$ 16,806	$ 17,071
Huerfano County Correctional Center
Facility Activations Developments And Closures [Line Items]
Design Capacity	752
Date Idled	2010
Net Carrying Value | $	$ 17,373	17,542
Diamondback Correctional Facility
Facility Activations Developments And Closures [Line Items]
Design Capacity	2,160
Date Idled	2010
Net Carrying Value | $	$ 41,260	41,539
Southeast Kentucky Correctional Facility
Facility Activations Developments And Closures [Line Items]
Design Capacity	656
Date Idled	2012
Net Carrying Value | $	$ 22,412	22,618
Marion Adjustment Center
Facility Activations Developments And Closures [Line Items]
Design Capacity	826
Date Idled	2013
Net Carrying Value | $	$ 12,077	12,135
Lee Adjustment Center
Facility Activations Developments And Closures [Line Items]
Design Capacity	816
Date Idled	2015
Net Carrying Value | $	$ 10,220	10,342
Kit Carson Correctional Center
Facility Activations Developments And Closures [Line Items]
Design Capacity	1,488
Date Idled	2016
Net Carrying Value | $	$ 58,386	58,819
Idle Facilities
Facility Activations Developments And Closures [Line Items]
Design Capacity	8,298
Net Carrying Value | $	$ 178,534	$ 180,066