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Intangible Assets (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Acquired Intangible Assets [Line Items]    
Net Value $ 14,000,000 $ 14,000,000
Weighted Average Amortization Period 15 years 15 years
Cost $ 19,300,000 $ 19,300,000
Accumulated Amortization 5,197,000 4,844,000
Impairment 0 0
Impairment 0 0
Net Value 100,000 500,000
Net Value 14,103,000 14,456,000
Trademarks    
Acquired Intangible Assets [Line Items]    
Net Value 4,800,000 4,800,000
Cost 4,800,000 4,800,000
Trade names    
Acquired Intangible Assets [Line Items]    
Net Value 4,200,000 4,200,000
Cost 4,200,000 4,200,000
State insurance licenses    
Acquired Intangible Assets [Line Items]    
Net Value 5,000,000 5,000,000
Cost 5,000,000 5,000,000
Impairment $ 0 $ 0
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration] Other Cost and Expense, Operating Other Cost and Expense, Operating
Customer relationships    
Acquired Intangible Assets [Line Items]    
Weighted Average Amortization Period 15 years 15 years
Cost $ 5,300,000 $ 5,300,000
Accumulated Amortization 5,197,000 4,844,000
Impairment 0 0
Net Value $ 103,000 $ 456,000