Investment Securities - Estimated Fair Value of Contractual Maturities - Available-for-Sale Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract]
Maturing within one year, Amortized Cost	$ 583
Maturing after one year through five years, Amortized Cost	40,187
Maturing after five years through ten years, Amortized Cost	156,541
Maturing after ten years, Amortized Cost	170,842
Securities due at a single maturity date, Amortized Cost	1,041,925
Amortized Cost	1,041,925	$ 984,579
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract]
Maturing within one year, Fair Value	582
Maturing after one year through five years, Fair Value	39,916
Maturing after five years through ten years, Fair Value	143,516
Maturing after ten years, Fair Value	164,981
Fair Value	1,019,201	934,923
Mortgage-Backed Securities [Member]
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract]
Securities not due at a single maturity date, Amortized Cost	100,745
Amortized Cost	100,745	129,948
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract]
Securities not due at a single maturity date, Fair Value	99,544
Fair Value	99,544	122,532
Collateralized Loan Obligations [Member]
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract]
Securities not due at a single maturity date, Amortized Cost	573,027
Amortized Cost	573,027	515,032
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract]
Securities not due at a single maturity date, Fair Value	570,662
Fair Value	$ 570,662	$ 498,377