Investment Securities - Schedule of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Amortized cost
Due in one year or less	$ 849	$ 64,776
Due in one to five years	4,186	75,996
Due in five to ten years	225,954	51,162
Due in over ten years	504,560	391,270
Amortized cost, sub-total	735,549	583,204
Amortized cost, AFS debt securities	1,679,397	1,658,779
Fair Value
Due in one year or less	847	64,279
Due in one to five years	4,600	71,801
Due in five to ten years	222,943	49,630
Due in over ten years	483,762	372,331
Fair value, sub-total	712,152	558,041
Total AFS debt securities	1,538,008	1,471,973
Mortgage-backed securities - residential
Amortized cost
Mortgage-backed securities	927,883	1,057,389
Amortized cost, AFS debt securities	927,883	1,057,389
Fair Value
Mortgage-backed securities	810,999	896,971
Total AFS debt securities	810,999	896,971
Mortgage-backed securities - commercial
Amortized cost
Mortgage-backed securities	15,965	18,186
Amortized cost, AFS debt securities	15,965	18,186
Fair Value
Mortgage-backed securities	14,857	16,961
Total AFS debt securities	$ 14,857	$ 16,961