v3.26.1
Reserve for Loss and Loss Adjustment Expenses - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Reporting [Line Items]        
Total AmTrust Reinsurance PPD $ (1,931) $ 7,788 $ (2,208) $ 7,788
Diversified Reinsurance Segment        
Segment Reporting [Line Items]        
Total AmTrust Reinsurance PPD 359 (125) 633 (125)
AmTrust Reinsurance legacy business        
Segment Reporting [Line Items]        
Total AmTrust Reinsurance PPD (2,290) $ 7,913 $ (2,841) $ 7,913
AmTrust Reinsurance legacy business | Foreign Currency Fluctuations        
Segment Reporting [Line Items]        
Total AmTrust Reinsurance PPD $ 2,310