Securities, HTM Debt Securities, Contractual Maturities (Details) $ in Thousands	Sep. 30, 2025 USD ($) Issuer	Dec. 31, 2024 USD ($) Issuer
Held-to-maturity Securities, Debt Maturities, Amortized Cost [Abstract]
Within one year	$ 85,322
From one to five years	229,828
From five to ten years	107,531
After ten years	348,793
Amortized cost	771,474	$ 842,921
Held-to-maturity Securities, Debt Maturities, Estimated Fair Value [Abstract]
Within one year	85,264
From one to five years	214,776
From five to ten years	98,939
After ten years	307,312
Fair value	$ 706,291	$ 749,945
Number of issuers whose holdings exceeded 10% of consolidated stockholders' equity, excluding U.S. Government securities and Government-sponsored enterprises securities | Issuer	0	0