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Reinsurance - Narrative (Details)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended 9 Months Ended
Apr. 01, 2024
USD ($)
program
layer
Jan. 19, 2024
Jul. 01, 2023
USD ($)
Jan. 31, 2024
USD ($)
Aug. 31, 2023
USD ($)
layer
Jun. 30, 2023
USD ($)
Dec. 31, 2023
USD ($)
Sep. 30, 2024
USD ($)
placement
Sep. 30, 2023
USD ($)
Reinsurance Retention [Line Items]                  
Reinsurance recoverable             $ 12,629 $ 18,144  
Arrangement term   5 years              
Proceeds from collaborative agreement       $ 25,000          
Proceeds from collaborative agreement, non-refundable               8,700  
Cash recoveries               $ 3,000  
Vesttoo | Homeowners of America Insurance Company                  
Reinsurance Retention [Line Items]                  
Additional premium payments             $ 20,000    
Reinsurance, collateral received from trust                 $ 47,600
Credit loss charge                 $ 48,200
Reinsurance, collateral, line of credit facility     $ 300,000            
Maximum | Vesttoo | Homeowners of America Insurance Company                  
Reinsurance Retention [Line Items]                  
Reinsurance coverage limit           $ 175,000      
Reinsurance Quota Share Program                  
Reinsurance Retention [Line Items]                  
Number of placements for reinsurance programs | placement               3  
Reinsured risk percentage 27.50%                
Number of programs | program 1                
Reinsurance Quota Share Program | Texas                  
Reinsurance Retention [Line Items]                  
Reinsured risk percentage               42.00%  
Reinsurance Quota Share Program | South Carolina                  
Reinsurance Retention [Line Items]                  
Reinsured risk percentage               7.00%  
Reinsurance Quota Share Program | Core program                  
Reinsurance Retention [Line Items]                  
Reinsured risk percentage               9.50%  
Reinsurance Quota Share Program | Core locations outside of Texas                  
Reinsurance Retention [Line Items]                  
Reinsured risk percentage               8.00%  
Reinsurance Quota Share Program | Combined program                  
Reinsurance Retention [Line Items]                  
Reinsured risk percentage               5.00%  
Reinsurance Property Catastrophe Treaties                  
Reinsurance Retention [Line Items]                  
Excess amount retained $ 465,000       $ 440,000        
Number of retention layers for reinsurance policy | layer 5       4        
Reinsurance Property Catastrophe Treaties | Minimum                  
Reinsurance Retention [Line Items]                  
Amount retained $ 45,000       $ 20,000        
Reinsurance Property Catastrophe Treaties | Maximum                  
Reinsurance Retention [Line Items]                  
Amount retained $ 75,000       $ 80,000        
Reinsurance Severe Convective Storm                  
Reinsurance Retention [Line Items]                  
Reinsurance recoverable               $ 30,000  
Amount retained               $ 85,000