XML 101 R62.htm IDEA: XBRL DOCUMENT v3.20.1
Reinsurance - Narrative (Details) - USD ($)
$ in Thousands
6 Months Ended
Jan. 01, 2020
Jul. 01, 2019
May 01, 2019
Jan. 01, 2019
Jul. 01, 2018
Jun. 30, 2020
Personal Auto            
Reinsurance Retention Policy            
Reinsurance - Percentage of Business Ceded 5.00% 10.00%   7.00%    
Reinsurance percentage of ceding commission   31.20%        
Homeowners            
Reinsurance Retention Policy            
Reinsurance - Percentage of Business Ceded   40.00%        
Reinsurance percentage of ceding commission   36.00%        
Property Catastrophe Program            
Reinsurance Retention Policy            
Amount of coverage in excess of retention     $ 650,000      
Casualty Program            
Reinsurance Retention Policy            
Amount of coverage in excess of retention         $ 35,000  
Retention amount         $ 5,000  
Minimum | Personal Auto            
Reinsurance Retention Policy            
Reinsurance percentage of ceding commission   30.00%        
Loss Ratio   64.70%        
Maximum | Personal Auto            
Reinsurance Retention Policy            
Reinsurance percentage of ceding commission   32.80%        
Loss Ratio   67.50%        
Weighted Average | Homeowners            
Reinsurance Retention Policy            
Reinsurance percentage of ceding commission   37.50%        
Reciprocal Exchanges | Homeowners            
Reinsurance Retention Policy            
Reinsurance - Percentage of Business Ceded   28.50%        
Reciprocal Exchanges | Property Catastrophe Program            
Reinsurance Retention Policy            
Amount of coverage in excess of retention   $ 480,000        
Retention amount   $ 20,000        
Subsequent Event | Minimum | Personal Auto            
Reinsurance Retention Policy            
Reinsurance percentage of ceding commission           5.00%
Subsequent Event | Maximum | Personal Auto            
Reinsurance Retention Policy            
Reinsurance percentage of ceding commission           30.00%
First Event | Property Catastrophe Program            
Reinsurance Retention Policy            
Retention amount     70,000      
Second Event | Property Catastrophe Program            
Reinsurance Retention Policy            
Retention amount     $ 50,000