v3.25.2
Segment Information - Summary of Segment Assets Reconciled to Consolidated Balance Sheet (Detail) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Segment Reporting Information [Line Items]    
Total assets $ 2,353,106 $ 2,230,213
Operating Segments [Member]    
Segment Reporting Information [Line Items]    
Total assets 2,353,106 2,230,213
Consolidation, Eliminations [Member]    
Segment Reporting Information [Line Items]    
Total assets (284,177) (142,739)
Insurance Operation [Member] | Operating Segments [Member]    
Segment Reporting Information [Line Items]    
Total assets 2,058,706 1,905,878
Exzeo Group Inc [Member] | Operating Segments [Member]    
Segment Reporting Information [Line Items]    
Total assets 159,534 89,441
Reciprocal Exchange Operation [Member] | Operating Segments [Member]    
Segment Reporting Information [Line Items]    
Total assets 129,418 105,556
Real Estates [Member] | Operating Segments [Member]    
Segment Reporting Information [Line Items]    
Total assets 109,015 96,795
Corporate and Other [Member] | Operating Segments [Member]    
Segment Reporting Information [Line Items]    
Total assets $ 180,610 $ 175,282