v3.26.1
Business Combinations - Schedule of Goodwill Intangible Assets and VOBA (Details) - Inigo Limited [Member] - USD ($)
$ in Thousands
Mar. 31, 2026
Feb. 02, 2026
Business Combination [Line Items]    
Goodwill and indefinite-lived intangible assets, gross carrying amount $ 219,933  
Goodwill and indefinite-lived intangible assets, accumulated amortization 0  
Goodwill and indefinite-lived intangible assets, net carrying amount 219,933  
Finite-lived intangible assets, gross carrying amount 204,714  
Finite-lived intangible assets, accumulated amortization (3,909)  
Finite-lived intangible assets, net carrying amount 200,805  
Goodwill and other acquired intangible assets, gross carrying amount 424,647  
Goodwill and other acquired intangible assets, accumulated amortization (3,909)  
Goodwill and other acquired intangible assets, net carrying amount 420,738  
VOBA asset - unearned premiums, gross carrying amount 204,999 [1] $ 204,999
VOBA asset - unearned premiums, accumulated amortization [1] (56,107)  
VOBA asset - unearned premiums, net carrying amount [1] 148,892  
VOBA liability - reserves, gross carrying amount (39,083) (39,083)
VOBA liability - reserves, accumulated amortization (2,611)  
VOBA liability - reserves, net carrying amount (36,472)  
Total VOBA, gross carrying amount 165,916 [2] $ 165,916
Total VOBA, accumulated amortization [2] (53,496)  
Total VOBA, net carrying amount [2] 112,420  
Goodwill    
Business Combination [Line Items]    
Goodwill and indefinite-lived intangible assets, gross carrying amount 5,283  
Goodwill and indefinite-lived intangible assets, accumulated amortization 0  
Goodwill and indefinite-lived intangible assets, net carrying amount 5,283  
Lloyd's Syndicate Capacity and Related Rights    
Business Combination [Line Items]    
Goodwill and indefinite-lived intangible assets, gross carrying amount 214,650  
Goodwill and indefinite-lived intangible assets, accumulated amortization 0  
Goodwill and indefinite-lived intangible assets, net carrying amount 214,650  
Broker Relationships Large Brokers [Member]    
Business Combination [Line Items]    
Finite-lived intangible assets, gross carrying amount 114,824  
Finite-lived intangible assets, accumulated amortization (1,595)  
Finite-lived intangible assets, net carrying amount 113,229  
Broker Relationships Other Brokers [Member]    
Business Combination [Line Items]    
Finite-lived intangible assets, gross carrying amount 46,068  
Finite-lived intangible assets, accumulated amortization (853)  
Finite-lived intangible assets, net carrying amount 45,215  
Brand [Member]    
Business Combination [Line Items]    
Finite-lived intangible assets, gross carrying amount 31,159  
Finite-lived intangible assets, accumulated amortization (1,039)  
Finite-lived intangible assets, net carrying amount 30,120  
Technology [Member]    
Business Combination [Line Items]    
Finite-lived intangible assets, gross carrying amount 12,663  
Finite-lived intangible assets, accumulated amortization (422)  
Finite-lived intangible assets, net carrying amount $ 12,241  
[1] Included in deferred policy acquisition costs and VOBA on our condensed consolidated balance sheets.
[2] Included in reserves for losses and LAE on our condensed consolidated balance sheets.