Securities - AFS Contractual Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
AFS, Amortized Cost, Rolling Maturity
Due in one year or less	$ 17,360
Due after one year through five years	101,989
Due after five years through ten years	36,641
Due after ten years	29,633
Total	185,623
Amortized Cost	1,537,980	$ 1,554,096
AFS, Fair Value, Rolling Maturity
Due in one year or less	17,349
Due after one year through five years	100,522
Due after five years through ten years	35,019
Due after ten years	28,379
Total	181,269
Fair Value	1,469,670	1,491,048
Residential mortgage-backed securities
AFS, Amortized Cost, Rolling Maturity
Mortgage-backed securities, collateralized mortgage obligations and commercial mortgage-backed securities	390,021
Amortized Cost	390,021	411,571
AFS, Fair Value, Rolling Maturity
Mortgage-backed securities, collateralized mortgage obligations and commercial mortgage-backed securities	367,905
Fair Value	367,905	391,060
Commercial mortgage-backed securities
AFS, Amortized Cost, Rolling Maturity
Mortgage-backed securities, collateralized mortgage obligations and commercial mortgage-backed securities	259,081
Amortized Cost	259,081	243,888
AFS, Fair Value, Rolling Maturity
Mortgage-backed securities, collateralized mortgage obligations and commercial mortgage-backed securities	255,651
Fair Value	255,651	240,336
Collateralized mortgage obligations
AFS, Amortized Cost, Rolling Maturity
Mortgage-backed securities, collateralized mortgage obligations and commercial mortgage-backed securities	703,255
Amortized Cost	703,255	716,201
AFS, Fair Value, Rolling Maturity
Mortgage-backed securities, collateralized mortgage obligations and commercial mortgage-backed securities	664,845
Fair Value	$ 664,845	$ 680,525