v3.26.1
Securities - Investment Securities by Contractual Maturity (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Investments, Debt and Equity Securities [Abstract]    
Held to Maturity, amortized cost, due in one year or less $ 22,631  
Held to Maturity, amortized cost, due after one year through five years 44,668  
Held to Maturity, amortized cost, due after five years through ten years 67,524  
Held to Maturity, amortized cost, due after ten years 2,754  
Held to Maturity, amortized cost, subtotal 137,577  
Held to Maturity, amortized cost, mortgage-backed securities and collateralized mortgage obligations 11,457,880  
Held to Maturity, Amortized Cost 11,595,457 $ 10,275,228
Held to Maturity, fair value, due in one year or less 22,648  
Held to Maturity, fair value, due after one year through five years 44,275  
Held to Maturity, fair value, due after five years through ten years 65,240  
Held to Maturity, fair value, due after ten years 2,744  
Held to Maturity, fair value, subtotal 134,907  
Held to Maturity, fair value, mortgage-backed securities and collateralized mortgage obligations 10,552,108  
Held to Maturity, fair value, total 10,687,015 9,433,365
Available for Sale, amortized cost, due after five years through ten years 7,935  
Available for Sale, amortized cost, subtotal 7,935  
Available for Sale, amortized cost, mortgage-backed securities and collateralized mortgage obligations 348,155  
Available for Sale, Amortized Cost 356,090 338,572
Available for Sale, fair value, due after five years through ten years 10,613  
Available for Sale, fair value, subtotal 10,613  
Available for Sale, fair value, mortgage-backed securities and collateralized mortgage obligations 345,521  
Available for Sale securities, at fair value $ 356,134 $ 338,197