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Summary of Business Organization, Operations and Significant Accounting Policies - Revenue Recognition and Facility Construction and Design (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | $ 2,413,167 | $ 2,376,727 | $ 2,256,612
U.S. Secure Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 1,518,292 | 1,437,831 | 1,488,936
Electronic Monitoring and Supervision Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 425,879 | 496,268 | 278,934
Reentry Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 275,102 | 255,428 | 274,893
International |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 193,894 | 187,200 | 213,849
Owned and Leased: Secure Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 1,140,548 | 1,109,923 | 1,127,688
Owned and Leased: Secure Services | U.S. Secure Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 1,140,548 | 1,109,923 | 1,127,688
Owned and Leased: Community-based |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 166,987 | 155,932 | 150,888
Owned and Leased: Community-based | Reentry Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 166,987 | 155,932 | 150,888
Owned and Leased: Youth Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues |  |  | 33,920
Owned and Leased: Youth Services | Reentry Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues |  |  | 33,920
Managed Only |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 576,731 | 522,021 | 579,074
Managed Only | U.S. Secure Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 377,744 | 327,908 | 361,248
Managed Only | Reentry Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 5,093 | 6,913 | 3,977
Managed Only | International |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 193,894 | 187,200 | 213,849
Electronic Monitoring Services and Other Reentry |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 528,901 | 588,851 | 365,042
Electronic Monitoring Services and Other Reentry | Electronic Monitoring and Supervision Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 425,879 | 496,268 | 278,934
Electronic Monitoring Services and Other Reentry | Reentry Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | $ 103,022 | $ 92,583 | $ 86,108

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