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Goodwill - Additional Information (Detail) $ in Thousands | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2020 USD ($) | Sep. 30, 2020 USD ($) Bed | Dec. 31, 2020 Bed | Oct. 31, 2020 Bed | Dec. 31, 2019 USD ($)
Goodwill and Intangible Assets Disclosure [Line Items] |  |  |  |  |
Establishment of goodwill |  | This goodwill was established in connection with multiple business combination transactions. |  |  |
Goodwill |  | $ 48,569 |  |  | $ 50,537
Two Managed-only Facilities |  |  |  |  |
Goodwill and Intangible Assets Disclosure [Line Items] |  |  |  |  |
Goodwill impairment charges | $ 2,000 |  |  |  |
Silverdale Detention Center | Forecast |  |  |  |  |
Goodwill and Intangible Assets Disclosure [Line Items] |  |  |  |  |
Number of beds at the facility | Bed |  |  | 1,046 |  |
Metro Davidson County Detention Facility | Subsequent Event |  |  |  |  |
Goodwill and Intangible Assets Disclosure [Line Items] |  |  |  |  |
Number of beds at the facility | Bed |  |  |  | 1,348 |
CoreCivic Safety |  |  |  |  |
Goodwill and Intangible Assets Disclosure [Line Items] |  |  |  |  |
Goodwill |  | $ 6,000 |  |  | 7,900
Number of beds at the facility | Bed |  | 72,000 |  |  |
CoreCivic Community |  |  |  |  |
Goodwill and Intangible Assets Disclosure [Line Items] |  |  |  |  |
Goodwill |  | $ 42,600 |  |  | $ 42,600

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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