Securities - Securities Available-for-sale (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	$ 963,726	$ 963,978
Gross Unrealized Gains	520	1,274
Gross Unrealized Losses	91,343	85,681
Fair Value	872,903	879,571
U.S. Treasury Securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	17,676	17,690
Gross Unrealized Gains	0	0
Gross Unrealized Losses	1,460	1,451
Fair Value	16,216	16,239
U.S. Government Agencies
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	10,235	10,258
Gross Unrealized Gains	0	0
Gross Unrealized Losses	858	848
Fair Value	9,377	9,410
Corporate Securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	49,453	49,609
Gross Unrealized Gains	12	0
Gross Unrealized Losses	5,292	5,770
Fair Value	44,173	43,839
Mortgage-Backed Securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	563,406	555,148
Gross Unrealized Gains	446	976
Gross Unrealized Losses	52,235	49,814
Fair Value	511,617	506,310
Municipal Securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	322,956	331,273
Gross Unrealized Gains	62	298
Gross Unrealized Losses	31,498	27,798
Fair Value	$ 291,520	$ 303,773