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Related Party Transactions - Additional Information (Detail) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended
Aug. 31, 2016
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Related Party Transaction [Line Items]        
Note receivable from affiliate   $ 12,200   $ 13,200
Unsecured Revolving Demand Promissory | Valhi Inc        
Related Party Transaction [Line Items]        
Maximum loan amount $ 25,000      
Interest rate on loans repayment 1.00%      
Principal due on demand effective date Dec. 31, 2024      
Note receivable from affiliate   12,200    
Interest income including unused commitment fees on our loan   $ 300 $ 200