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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, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | $ 2,256,612 | $ 2,350,098 | $ 2,477,922
U.S. Secure Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 1,488,936 | 1,571,216 | 1,601,679
Electronic Monitoring and Supervision Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 278,934 | 241,944 | 256,954
Reentry Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 274,893 | 309,398 | 357,295
International |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 213,849 | 227,540 | 261,994
Owned and Leased: Secure Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 1,127,688 | 1,198,881 | 1,228,299
Owned and Leased: Secure Services | U.S. Secure Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 1,127,688 | 1,198,881 | 1,228,299
Owned and Leased: Community-based |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 150,888 | 145,491 | 176,001
Owned and Leased: Community-based | Reentry Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 150,888 | 145,491 | 176,001
Owned and Leased: Youth Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 33,920 | 75,792 | 87,189
Owned and Leased: Youth Services | Reentry Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 33,920 | 75,792 | 87,189
Managed Only |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 579,074 | 605,388 | 640,897
Managed Only | U.S. Secure Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 361,248 | 372,335 | 373,380
Managed Only | Reentry Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 3,977 | 5,513 | 5,523
Managed Only | International |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 213,849 | 227,540 | 261,994
Non-residential Services and Other |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 365,042 | 324,546 | 345,536
Non-residential Services and Other | Electronic Monitoring and Supervision Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | 278,934 | 241,944 | 256,954
Non-residential Services and Other | Reentry Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenues | $ 86,108 | $ 82,602 | $ 88,582

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