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Income Taxes - Additional Information (Detail) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 | Mar. 31, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Income Taxes [Line Items] |  |  |  |  |  |
Minimum Distribution Percentage of Taxable Income to Qualify for Real Estate Investment Trust |  |  |  | 90.00% |  |
Income tax expense | $ 369,000 |  | $ 1,486,000 | $ 3,183,000 | $ 5,942,000 |
Lease expiration term |  |  |  | 20 years |  |
Deferred employer side social security payments |  |  |  | $ 19,600,000 |  |
Liabilities for uncertain tax positions | 0 |  |  | 0 |  | $ 0
Lansing Correctional Facility |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Income tax expense deferred during construction period |  | $ 3,100,000 |  |  |  |
Deferred tax asset revalued upon conversion of TRS to QRS | $ 0 |  |  | $ 0 |  |

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