Organization and Operations - Additional Information (Detail)	Mar. 31, 2014 Bed State Facility
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of facilities owned by government partners, managed	13
Number of facilities owned or controlled by company	52
Number of beds at the facility	86,500
Number of states in which company facilities are located	20
Government
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of facilities owned by government partners, managed	13