v3.26.1
Statutory Information - Schedule of Statutory Net Income (Loss) and Statutory Policyholders' Surplus (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Statutory Accounting Practices [Line Items]      
Statutory policyholders' surplus [1] $ 1,680,000    
Radian Guaranty      
Statutory Accounting Practices [Line Items]      
Statutory net income (loss) 305,372 $ 360,049  
Statutory policyholders' surplus 582,089   $ 646,115
Other Mortgage Insurance Subsidiaries      
Statutory Accounting Practices [Line Items]      
Statutory net income (loss) 456 $ 629  
Statutory policyholders' surplus $ 17,949   $ 17,057
[1] Includes a $620 million letter of credit, which is pledged as FAL and has not been called upon during 2026.