v3.26.1
Debt (Narrative) (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Debt Instrument [Line Items]    
Total loans $ 7,058,310 $ 7,100,907
Investment securities pledged as collateral 1,360,000  
Investment at amortized cost pledged for long-term borrowings 4,300  
Short-term debt, maximum amount available 4,530,000  
Short-term borrowings 744,000 $ 199,000
Short-term debt, unused amount available 3,790,000  
Asset Pledged as Collateral without Right    
Debt Instrument [Line Items]    
Total loans $ 4,870,000