v3.26.1
Interest sensitive contract liabilities - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Policyholder Account Balance [Line Items]      
Surrender and withdrawal, benefits and product charges $ 30,000 $ 9,500  
Minimum      
Policyholder Account Balance [Line Items]      
Minimum guaranteed interest rates 2.00%    
Maximum      
Policyholder Account Balance [Line Items]      
Minimum guaranteed interest rates   7.00%  
Interest Sensitive Life      
Policyholder Account Balance [Line Items]      
Policyholder account balance $ 363,981 $ 334,876 $ 256,569
Policies assumed 42,996 72,818  
Interest credited $ 16,075 $ 14,972