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Organization and Operations - Additional Information (Detail) ft² in Millions | Dec. 31, 2017 ft² Facility Property Bed State | Jun. 10, 2016 Bed | Aug. 27, 2015 Bed
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Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |
Number of facilities owned by government partners, managed | 7 |  |
Number of beds at the facility | Bed |  | 112 | 600
Number of properties leased to third parties and used by government agencies | 12 |  |
Correctional, Detention, and Residential Reentry Facility |  |  |
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |
Number of facilities owned by government partners, managed | 7 |  |
Number of facilities owned and managed by the company | 70 |  |
Number of beds at the facility | Bed | 78,000 |  |
Number of states in which company facilities are located | State | 19 |  |
Leased to Third-Parties |  |  |
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |
Number of states in which company facilities are located | State | 5 |  |
Number of properties leased to third parties and used by government agencies | Property | 12 |  |
Number of square feet | ft² | 1.1 |  |

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