XML 54 R44.htm IDEA: XBRL DOCUMENT v3.23.3
Reinsurance - Narrative (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Feb. 06, 2020
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Dec. 31, 2021
Ceded Credit Risk [Line Items]              
Premiums receivable balance, credit provisions   $ 2,700   $ 2,700   $ 2,900  
Premiums receivable   689,042   689,042   522,670  
Paid losses recoverable   138,314   138,314   90,655  
Unpaid losses and loss adjustment expenses recoverable   1,157,123 $ 1,151,128 1,157,123 $ 1,151,128 1,177,863 $ 1,112,543
Reinsurance recoverable, provisions   700   700   800  
Reinsurance premiums ceded   90,557 100,000 400,475 366,933    
Related Party              
Ceded Credit Risk [Line Items]              
Reinsurance premiums ceded   0 0 7,200 6,300    
Risk transfer capacity       150,000      
Reinsurance Contract [Axis]: Loss Portfolio Transfer Agreement              
Ceded Credit Risk [Line Items]              
Unpaid losses and loss adjustment expenses recoverable   50,700   50,700   $ 59,200  
Reinsurance premiums ceded $ 72,100            
Amortization of the deferred gain   $ (900) $ 3,700 $ 2,500 $ 1,700    
Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments | Reinsurer Concentration Risk              
Ceded Credit Risk [Line Items]              
% of total paid and unpaid losses and loss adjustment expenses recoverable       100.00%   100.00%  
Reinsurer One | Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments | Reinsurer Concentration Risk              
Ceded Credit Risk [Line Items]              
% of total paid and unpaid losses and loss adjustment expenses recoverable       27.00%   31.00%  
Reinsurer Two | Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments | Reinsurer Concentration Risk              
Ceded Credit Risk [Line Items]              
% of total paid and unpaid losses and loss adjustment expenses recoverable       19.00%   17.00%  
Reinsurer Three | Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments | Reinsurer Concentration Risk              
Ceded Credit Risk [Line Items]              
% of total paid and unpaid losses and loss adjustment expenses recoverable       12.00%   11.00%