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Discontinued Operations - Additional Information (Detail) | Jun. 30, 2013 Wilkinson County Correctional Facility Facility | Jun. 30, 2013 Dawson State Jail Facility | Jan. 31, 2012 Delta Correctional Facility Facility | Nov. 30, 2011 Delta Correctional Facility Facility
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Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Housing capacity of terminated facility, in beds | 1,000 | 2,216 |  | 1,172
Number of inmates being transferred from facility |  |  | 900 |

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