v3.26.1
Schedule of Repurchase Agreements Obligation by Type of Collateral Pledged (Detail) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Assets Sold under Agreements to Repurchase [Line Items]    
Gross Amount of Recognized Liabilities for Repurchase Agreements in Note 10. "Offsetting of Assets and Liabilities" $ 320,640 $ 289,218
Amounts Related to Agreements Not Included in Offsetting Disclosure in Note 10. "Offsetting of Assets and Liabilities" 0 0
Asset-backed Securities    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase Agreements 320,640 289,218
Overnight and Continuous | Asset-backed Securities    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase Agreements 0 0
Up to 30 Days | Asset-backed Securities    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase Agreements 259,183 103,835
30 - 90 Days | Asset-backed Securities    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase Agreements 49,011 176,196
Greater than 90 Days | Asset-backed Securities    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase Agreements $ 12,446 $ 9,187