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Insurance Operations - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
UPCIC        
Statutory Accounting Practices [Line Items]        
Ordinary dividend capacity accordance with Florida Insurance Code $ 2,100,000   $ 2,100,000  
Dividends   $ 0 $ 0  
APPCIC        
Statutory Accounting Practices [Line Items]        
Dividends 0     $ 0
UPCIC and APPCIC        
Statutory Accounting Practices [Line Items]        
Minimum capitalization rate     10.00%  
UPCIC and APPCIC | Minimum        
Statutory Accounting Practices [Line Items]        
Minimum capitalization amount $ 10,000,000.0   $ 10,000,000.0