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Investment in Affiliate - Additional Information (Detail) - USD ($)
1 Months Ended 12 Months Ended
Sep. 30, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Investments In And Advances To Affiliates [Line Items]        
Duration of prison management contract with an agency of the United Kingdom government   25 years    
Working capital loan to APM   $ 3,063,000 $ 3,094,000  
Equity earnings (losses) of joint venture   (138,000) $ (192,000) $ (128,000)
Other Assets        
Investments In And Advances To Affiliates [Line Items]        
Equity in net deficit of Affiliate   $ 300,000    
GRES        
Investments In And Advances To Affiliates [Line Items]        
Percentage of voting control 100.00%      
Agecroft Prison Management Ltd        
Investments In And Advances To Affiliates [Line Items]        
Variable interest entity, ownership percentage   50.00%