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Commitments, Contingencies and Other Matters - Additional Information (Details) |  |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |
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Sep. 16, 2025 Bed | Aug. 28, 2025 Bed | Aug. 06, 2025 USD ($) | Jul. 01, 2025 USD ($) | Jun. 03, 2025 USD ($) | Oct. 31, 2021 USD ($) | Jul. 31, 2024 USD ($) | Sep. 30, 2024 USD ($) | Jun. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) Facility | Sep. 30, 2024 USD ($) | Dec. 31, 2024
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, judgement value |  |  |  |  |  | $ 23,200,000 |  |  |  |  |  |
Attorneys fees costs and interest amount |  |  |  |  |  |  |  |  |  | $ 14,400,000 |  |
Accrued Reserve |  |  |  |  |  |  |  |  |  | 37,600,000 |  |
Federal immigration detainee minimum allowance per day |  |  |  |  |  |  |  |  |  | 1 |  |
Payment of estimated liability related to assessment for audited period |  |  |  |  |  |  | $ 18,900,000 |  |  |  |  |
Penalties and interest related to the post-audit period |  |  |  |  |  |  |  | $ 6,300,000 |  |  |  |
Contract developments, renewal period | 2 years |  |  |  |  |  |  |  |  |  |  |
Estimated construction existing active capital projects cost |  |  |  |  |  |  |  |  |  | 71,800,000 |  |
Cost already spent on existing active capital projects |  |  |  |  |  |  |  |  |  | 45,600,000 |  |
Remaining capital required for existing active capital projects |  |  |  |  |  |  |  |  |  | $ 26,200,000 |  |
Number of lease facilities | Facility |  |  |  |  |  |  |  |  |  | 9 |  |
Rental income |  |  |  |  |  |  |  |  |  | $ 11,300,000 | $ 11,400,000 |
Unrecognized tax benefits for uncertain tax positions |  |  |  |  |  |  |  |  |  | $ 42,600,000 |  |
Unrecognized benefition interest deduction for shares issued |  |  |  |  |  |  |  |  | $ 38,900,000 |  |  |
Bay Correctional and Rehabilitation Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of beds in detention facility | Bed | 985 |  |  |  |  |  |  |  |  |  |  |
Graceville Correctional and Rehabilitation Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of beds in detention facility | Bed | 1,884 |  |  |  |  |  |  |  |  |  |  |
Moore Haven Correctional and Rehabilitation Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of beds in detention facility | Bed | 985 |  |  |  |  |  |  |  |  |  |  |
North Florida Detention Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of beds in detention facility | Bed |  | 1,310 |  |  |  |  |  |  |  |  |  |
Lawton Facility |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Asset sale close date |  |  |  |  | Jul. 25, 2025 |  |  |  |  |  |  |
Proceeds from sale of property and equipment |  |  |  | $ 222,000,000 |  |  |  |  |  |  |  |
Lawton Facility | Secured Debt |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Repayment of long term debt |  |  |  | 300,000,000 |  |  |  |  |  |  |  |
San Diego Facility |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Carrying value of leased facilities |  |  |  | 5,100,000 |  |  |  |  |  |  |  |
Payments to Acquire Productive Assets |  |  |  | 60,000,000 |  |  |  |  |  |  |  |
Leased facility amount |  |  |  | $ 5,100,000 |  |  |  |  |  |  |  |
Lease expiration date |  |  |  | Mar. 31, 2029 |  |  |  |  |  |  |  |
Purchase facility close date |  |  |  | Jul. 31, 2025 |  |  |  |  |  |  |  |
Sale of Properties |  |  |  | $ 9,300,000 |  |  |  |  |  |  |  |
6.50% Exchangeable Senior Notes due 2026 |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate |  |  |  |  |  |  |  |  |  | 6.50% |  | 6.50%
Sales Agreement | Lawton Facility |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Sale price |  |  | $ 9,600,000 |  | $ 312,000,000 |  |  |  |  |  |  |
Gain on sale of assets |  |  | $ 4,000 |  | $ 228,000,000 |  |  |  |  |  |  |
Term of Contract |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of lease facilities | Facility |  |  |  |  |  |  |  |  |  | 1 |  |
Lessor operating lease expiration period |  |  |  |  |  |  |  |  |  | 2026-10 |  |
Carrying value of leased facilities |  |  |  |  |  |  |  |  |  | $ 2,100,000 |  |
Leased facilities accumulated depreciation |  |  |  |  |  |  |  |  |  | 1,000,000 |  |
Leased facility amount |  |  |  |  |  |  |  |  |  | $ 2,100,000 |  |
Sixty Nine Months Term of Contract |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of lease facilities | Facility |  |  |  |  |  |  |  |  |  | 1 |  |
Lessor operating lease expiration period |  |  |  |  |  |  |  |  |  | 2028-10 |  |
Carrying value of leased facilities |  |  |  |  |  |  |  |  |  | $ 71,900,000 |  |
Leased facilities accumulated depreciation |  |  |  |  |  |  |  |  |  | $ 39,800,000 |  |
Lessor, operating lease, term of contract |  |  |  |  |  |  |  |  |  | 69 months |  |
Lessor operating lease renewal period |  |  |  |  |  |  |  |  |  | 1 year |  |
Leased facility amount |  |  |  |  |  |  |  |  |  | $ 71,900,000 |  |
Twenty Years Term of Contract |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Lessor operating lease expiration period |  |  |  |  |  |  |  |  |  | 2041-10 |  |
Carrying value of leased facilities |  |  |  |  |  |  |  |  |  | $ 19,700,000 |  |
Leased facilities accumulated depreciation |  |  |  |  |  |  |  |  |  | $ 19,200,000 |  |
Lessor, operating lease, term of contract |  |  |  |  |  |  |  |  |  | 20 years |  |
Leased facility amount |  |  |  |  |  |  |  |  |  | $ 19,700,000 |  |
Five Years Term of Contract |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of lease facilities | Facility |  |  |  |  |  |  |  |  |  | 6 |  |
Lessor operating lease expiration period |  |  |  |  |  |  |  |  |  | 2027-06 |  |
Carrying value of leased facilities |  |  |  |  |  |  |  |  |  | $ 44,200,000 |  |
Leased facilities accumulated depreciation |  |  |  |  |  |  |  |  |  | 27,300,000 |  |
Leased facility amount |  |  |  |  |  |  |  |  |  | $ 44,200,000 |  |

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