Idled Facilities and Respective Carrying Values Excluding Equipment and Other Assets (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014 Facility	Dec. 31, 2013
Facility Activations Developments And Closures [Line Items]
Design Capacity	84,500
Shelby Training Center
Facility Activations Developments And Closures [Line Items]
Design Capacity	200
Date Idled	2008
Net Carrying Value	$ 452	$ 751
Queensgate Correctional Facility
Facility Activations Developments And Closures [Line Items]
Design Capacity	850
Date Idled	2009
Net Carrying Value	11,533	11,808
Prairie Correctional Facility
Facility Activations Developments And Closures [Line Items]
Design Capacity	1,600
Date Idled	2010
Net Carrying Value	18,516	19,366
Huerfano County Correctional Center
Facility Activations Developments And Closures [Line Items]
Design Capacity	752
Date Idled	2010
Net Carrying Value	19,214	19,800
Diamondback Correctional Facility
Facility Activations Developments And Closures [Line Items]
Design Capacity	2,160
Date Idled	2010
Net Carrying Value	43,217	44,223
Otter Creek Correctional Center
Facility Activations Developments And Closures [Line Items]
Design Capacity	656
Date Idled	2012
Net Carrying Value	24,178	24,805
Mineral Wells Pre-Parole Transfer Facility
Facility Activations Developments And Closures [Line Items]
Design Capacity	2,103
Date Idled	2013
Net Carrying Value	17,358	17,856
Marion Adjustment Center Facility
Facility Activations Developments And Closures [Line Items]
Design Capacity	826
Date Idled	2013
Net Carrying Value	13,090	13,429
Total Idle Facilities
Facility Activations Developments And Closures [Line Items]
Design Capacity	9,147
Net Carrying Value	$ 147,558	$ 152,038