Securities, HTM Debt Securities, Contractual Maturities (Details) $ in Thousands	Dec. 31, 2022 USD ($) Issuer	Dec. 31, 2021 USD ($) Issuer	Dec. 31, 2020 Issuer
Held-to-maturity Securities, Debt Maturities, Amortized Cost [Abstract]
Within one year	$ 49,986
From one to five years	92,443
From five to ten years	278,664
After ten years	498,424
Amortized cost	919,517	$ 733,210
Held-to-maturity Securities, Debt Maturities, Estimated Fair Value [Abstract]
Within one year	49,979
From one to five years	89,979
From five to ten years	241,294
After ten years	431,395
Fair value	$ 812,647	$ 735,260
Number of issuers whose holdings exceeded 10% of consolidated stockholders' equity, excluding U.S. Government securities | Issuer	0	0	0