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Commitments, Contingencies and Other (Details Textual) $ in Thousands, AUD in Millions |  |  |  | 6 Months Ended |  |  |  |  |  |
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Jun. 01, 2015 USD ($) | May. 30, 2015 USD ($) | May. 14, 2015 shares | Jun. 30, 2015 USD ($) | Jun. 30, 2015 AUD facility bed | Jun. 30, 2015 USD ($) facility bed | May. 21, 2015 inmate | May. 20, 2015 inmate | Apr. 28, 2015 bed | Apr. 27, 2015 bed | Sep. 30, 2014 AUD | Sep. 30, 2014 USD ($)
Commitments and Contingencies (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Estimated construction capital project cost |  |  |  | $ 221,000 |  |  |  |  |  |  |  |
Cost already spent on existing capital projects |  |  |  | 88,000 |  |  |  |  |  |  |  |
Remaining capital required for capital projects |  |  |  | $ 133,000 |  |  |  |  |  |  |  |
Number of vacant beds at idle facilities marketed to potential customers | bed |  |  |  |  | 3,740 | 3,740 |  |  |  |  |  |
Number of marketed idle facilities | facility |  |  |  |  | 5 | 5 |  |  |  |  |  |
Property and Equipment |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Carrying values of idle facilities marketed to potential customers |  |  |  |  |  | $ 34,800 |  |  |  |  |  |
National Australia Bank Limited | Ravenhall | Non-Recourse Debt |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Contributions in aid of construction |  |  |  |  | AUD 115.0 | 88,100 |  |  |  |  |  |
National Australia Bank Limited | Ravenhall | Non-Recourse Debt | Construction Facility |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  | AUD 791.0 | $ 605,700 |  |  |  |  | AUD 791.0 | $ 605,700
Facility management contracts and customer relationships | Fulham Correctional Centre & Fulham Nalu Challenge Community Unit |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Number of beds in a facility | bed |  |  |  |  |  |  |  |  |  | 947 |  |
Facility management contracts and customer relationships | North Lake Correctional Facility |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Number of beds in a facility | bed |  |  |  |  |  |  |  |  | 1,740 |  |  |
Out-Of-State Housing Contract | Vermont Department of Corrections |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Number of inmates, capacity | inmate |  |  |  |  |  |  |  | 675 |  |  |  |
Out-Of-State Housing Contract | Washington Department of Corrections |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Number of inmates, capacity | inmate |  |  |  |  |  |  | 1,000 |  |  |  |  |
Chief Executive Officer | Third Amendment to the Third Amended and Restated Executive Employment Agreement |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Annual base salary | $ 1,000 | $ 1,215 |  |  |  |  |  |  |  |  |  |
Maximum performance award as percent of annual base salary | 150.00% | 100.00% |  |  |  |  |  |  |  |  |  |
Performance-Based Restricted Stock | Chief Executive Officer | Third Amendment to the Third Amended and Restated Executive Employment Agreement |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Granted shares | shares |  |  | 25,000 |  |  |  |  |  |  |  |  |

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