v3.26.1
Securities - Investment Securities by Contractual Maturity (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Investments, Debt and Equity Securities [Abstract]    
Held to Maturity, amortized cost, due in one year or less $ 22,670  
Held to Maturity, amortized cost, due after one year through five years 42,558  
Held to Maturity, amortized cost, due after five years through ten years 66,521  
Held to Maturity, amortized cost, due after ten years 2,565  
Held to Maturity, amortized cost, subtotal 134,314  
Held to Maturity, amortized cost, mortgage-backed securities and collateralized mortgage obligations 11,858,743  
Held to Maturity, Amortized Cost 11,993,057 $ 10,275,228
Held to Maturity, fair value, due in one year or less 22,689  
Held to Maturity, fair value, due after one year through five years 42,205  
Held to Maturity, fair value, due after five years through ten years 64,293  
Held to Maturity, fair value, due after ten years 2,546  
Held to Maturity, fair value, subtotal 131,733  
Held to Maturity, fair value, mortgage-backed securities and collateralized mortgage obligations 10,969,569  
Held to Maturity, fair value, total 11,101,302 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 338,407  
Available for Sale, Amortized Cost 346,342 338,572
Available for Sale, fair value, due after five years through ten years 10,685  
Available for Sale, fair value, subtotal 10,685  
Available for Sale, fair value, mortgage-backed securities and collateralized mortgage obligations 335,338  
Available for Sale securities, at fair value $ 346,023 $ 338,197