Idled Facilities and Respective Carrying Values Excluding Equipment and Other Assets (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($) Bed	Dec. 31, 2015 USD ($)
Facility Activations Developments And Closures [Line Items]
Design Capacity	88,500
Prairie Correctional Facility
Facility Activations Developments And Closures [Line Items]
Design Capacity	1,600
Date Idled	2010
Net Carrying Value | $	$ 17,956	$ 17,961
Huerfano County Correctional Center
Facility Activations Developments And Closures [Line Items]
Design Capacity	752
Date Idled	2010
Net Carrying Value | $	$ 18,089	18,276
Diamondback Correctional Facility
Facility Activations Developments And Closures [Line Items]
Design Capacity	2,160
Date Idled	2010
Net Carrying Value | $	$ 42,659	43,030
Otter Creek Correctional Center
Facility Activations Developments And Closures [Line Items]
Design Capacity	656
Date Idled	2012
Net Carrying Value | $	$ 23,212	23,270
Marion Adjustment Center
Facility Activations Developments And Closures [Line Items]
Design Capacity	826
Date Idled	2013
Net Carrying Value | $	$ 12,427	12,536
Lee Adjustment Center
Facility Activations Developments And Closures [Line Items]
Design Capacity	816
Date Idled	2015
Net Carrying Value | $	$ 10,715	10,840
North Fork Correctional Facility
Facility Activations Developments And Closures [Line Items]
Design Capacity	2,400
Date Idled	2015
Net Carrying Value | $	$ 74,189	74,805
Idle Facilities
Facility Activations Developments And Closures [Line Items]
Design Capacity	9,210
Net Carrying Value | $	$ 199,247	$ 200,718