SECURITIES - Summary of Securities With Unrealized and Unrecognized Losses (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt and Equity Securities, FV-NI [Line Items]
AFS, fair value, less than 12 months	$ 475,479	$ 966,502
AFS, unrealized losses, less than 12 months	43,854	10,511
AFS, fair value, 12 months or longer	752,306	20,938
AFS, unrealized losses, 12 months or longer	118,054	585
AFS, fair value, total	1,227,785	987,440
AFS, unrealized losses, total	161,908	11,096
HTM, fair value, less than 12 months	530,503
HTM, unrealized losses, less than 12 months	53,803
HTM, fair value, 12 months or longer	15,303
HTM, unrealized losses, 12 months or longer	116
HTM, fair value, total	545,806
HTM, unrealized losses, total	53,919
U.S Treasury
Debt and Equity Securities, FV-NI [Line Items]
AFS, fair value, less than 12 months	4,563	130,098
AFS, unrealized losses, less than 12 months	419	814
AFS, fair value, 12 months or longer	119,292	0
AFS, unrealized losses, 12 months or longer	11,479	0
AFS, fair value, total	123,855	130,098
AFS, unrealized losses, total	11,898	814
HTM, fair value, less than 12 months	104,457
HTM, unrealized losses, less than 12 months	5,175
HTM, fair value, 12 months or longer	0
HTM, unrealized losses, 12 months or longer	0
HTM, fair value, total	104,457
HTM, unrealized losses, total	5,175
Obligations of U.S. government agencies and sponsored entities
Debt and Equity Securities, FV-NI [Line Items]
AFS, fair value, less than 12 months	34,254	121,402
AFS, unrealized losses, less than 12 months	2,293	933
AFS, fair value, 12 months or longer	109,431	5,254
AFS, unrealized losses, 12 months or longer	16,395	161
AFS, fair value, total	143,685	126,656
AFS, unrealized losses, total	18,688	1,094
HTM, fair value, less than 12 months	31,636
HTM, unrealized losses, less than 12 months	2,153
HTM, fair value, 12 months or longer	0
HTM, unrealized losses, 12 months or longer	0
HTM, fair value, total	31,636
HTM, unrealized losses, total	2,153
Tax-exempt and taxable obligations of states and municipal subdivisions
Debt and Equity Securities, FV-NI [Line Items]
AFS, fair value, less than 12 months	275,202	249,430
AFS, unrealized losses, less than 12 months	31,152	2,692
AFS, fair value, 12 months or longer	159,508	3,692
AFS, unrealized losses, 12 months or longer	30,779	119
AFS, fair value, total	434,710	253,122
AFS, unrealized losses, total	61,931	2,811
HTM, fair value, less than 12 months	127,628
HTM, unrealized losses, less than 12 months	13,583
HTM, fair value, 12 months or longer	15,303
HTM, unrealized losses, 12 months or longer	116
HTM, fair value, total	142,931
HTM, unrealized losses, total	13,699
Mortgage-backed securities - residential
Debt and Equity Securities, FV-NI [Line Items]
AFS, fair value, less than 12 months	76,125	284,183
AFS, unrealized losses, less than 12 months	4,970	3,228
AFS, fair value, 12 months or longer	222,274	8,912
AFS, unrealized losses, 12 months or longer	37,071	197
AFS, fair value, total	298,399	293,095
AFS, unrealized losses, total	42,041	3,425
HTM, fair value, less than 12 months	138,639
HTM, unrealized losses, less than 12 months	17,479
HTM, fair value, 12 months or longer	0
HTM, unrealized losses, 12 months or longer	0
HTM, fair value, total	138,639
HTM, unrealized losses, total	17,479
Mortgage-backed securities - commercial
Debt and Equity Securities, FV-NI [Line Items]
AFS, fair value, less than 12 months	50,193	174,697
AFS, unrealized losses, less than 12 months	3,025	2,836
AFS, fair value, 12 months or longer	136,062	3,038
AFS, unrealized losses, 12 months or longer	21,338	103
AFS, fair value, total	186,255	177,735
AFS, unrealized losses, total	24,363	2,939
HTM, fair value, less than 12 months	119,758
HTM, unrealized losses, less than 12 months	13,798
HTM, fair value, 12 months or longer	0
HTM, unrealized losses, 12 months or longer	0
HTM, fair value, total	119,758
HTM, unrealized losses, total	13,798
Corporate obligations
Debt and Equity Securities, FV-NI [Line Items]
AFS, fair value, less than 12 months	35,142	6,692
AFS, unrealized losses, less than 12 months	1,995	8
AFS, fair value, 12 months or longer	5,739	42
AFS, unrealized losses, 12 months or longer	992	5
AFS, fair value, total	40,881	6,734
AFS, unrealized losses, total	2,987	$ 13
HTM, fair value, less than 12 months	8,385
HTM, unrealized losses, less than 12 months	1,615
HTM, fair value, 12 months or longer	0
HTM, unrealized losses, 12 months or longer	0
HTM, fair value, total	8,385
HTM, unrealized losses, total	$ 1,615