v3.25.2
Investments - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Jun. 30, 2025
Debt Securities, Available-for-sale [Line Items]    
Asset, held-in-Trust $ 141,900 $ 287,900
Cash and Cash Equivalents    
Debt Securities, Available-for-sale [Line Items]    
Asset, held-in-Trust $ 6,300 39,200
Limited Partnership    
Debt Securities, Available-for-sale [Line Items]    
Purchase obligation, term 10 years  
Purchase obligation   9,500
Deposits    
Debt Securities, Available-for-sale [Line Items]    
Assets held by insurance regulators $ 25,700 $ 21,300
Financial Services Sector    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities portfolio, percentage   30.00%
Technology And Communications Sector    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities portfolio, percentage   12.00%
Non-Cyclical Consumer Sector    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities portfolio, percentage   11.00%
Utilities Industry Group    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities portfolio, percentage   13.00%
Energy Sector    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities portfolio, percentage   10.00%
Capital Goods    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities portfolio, percentage   10.00%