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Line of Credit - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2024
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2023
Line Of Credit Facility [Line Items]        
Revolving line of credit, permitted $ 25,000,000      
Line of credit, maturity date Jun. 30, 2025      
Term facility payable (in years) five      
Percentage of restricted dividend payments 55.00%      
Line of credit $ 0     $ 0
Minimum [Member]        
Line Of Credit Facility [Line Items]        
Percentage of stock dividend declared   36.00%    
Maximum [Member]        
Line Of Credit Facility [Line Items]        
Percentage of stock dividend declared     53.00%