v3.26.1
Available-for-Sale Securities, at Fair Value - Narrative (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Total available-for-sale securities $ 5,091,319 $ 6,514,471
Available-for-sale securities, allowance for credit losses 360 1,609
Variable Interest Entity, Not Primary Beneficiary    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Total available-for-sale securities 3,000 3,300
Maximum exposure to loss of nonconsolidated Variable Interest Entities 3,000 3,300
Asset Pledged as Collateral    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Total available-for-sale securities $ 5,100,000 $ 6,500,000