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Organization and Operations - Additional Information (Detail)
Dec. 31, 2012
State
Bed
Facility
Organization Consolidation And Presentation Of Financial Statements [Line Items]  
Number of facilities operated by company 67
Number of facilities owned by company 47
Number of beds at the facility 92,500
Number of states in which company facilities are located 20
Number of correctional facilities leased to third-party operators 2