INVESTMENT SECURITIES - Summary of Investment Securities With Unrealized Losses (Detail) $ in Thousands	Dec. 31, 2024 USD ($) security	Dec. 31, 2023 USD ($) security
Number of Securities
Less Than 12 Months | security	142	12
12 Months or More | security	88	91
Total | security	230	103
Fair Value
Less Than 12 Months	$ 278,098	$ 27,525
12 Months or More	380,299	422,911
Total	658,397	450,436
Unrealized Losses
Less Than 12 Months	2,233	326
12 Months or More	34,742	36,561
Total	$ 36,975	$ 36,887
U.S. Treasury securities
Number of Securities
Less Than 12 Months | security	0	0
12 Months or More | security	3	3
Total | security	3	3
Fair Value
Less Than 12 Months	$ 0	$ 0
12 Months or More	18,063	17,840
Total	18,063	17,840
Unrealized Losses
Less Than 12 Months	0	0
12 Months or More	1,980	2,217
Total	$ 1,980	$ 2,217
States and political subdivisions
Number of Securities
Less Than 12 Months | security	13	4
12 Months or More | security	42	40
Total | security	55	44
Fair Value
Less Than 12 Months	$ 10,080	$ 2,419
12 Months or More	189,448	199,933
Total	199,528	202,352
Unrealized Losses
Less Than 12 Months	131	53
12 Months or More	20,269	18,477
Total	$ 20,400	$ 18,530
GSE residential MBSs
Number of Securities
Less Than 12 Months | security	68	0
12 Months or More | security	15	15
Total | security	83	15
Fair Value
Less Than 12 Months	$ 85,836	$ 0
12 Months or More	55,579	57,632
Total	141,415	57,632
Unrealized Losses
Less Than 12 Months	1,117	0
12 Months or More	3,180	4,037
Total	$ 4,297	$ 4,037
GSE commercial MBSs
Number of Securities
Less Than 12 Months | security	3
12 Months or More | security	0
Total | security	3
Fair Value
Less Than 12 Months	$ 2,963
12 Months or More	0
Total	2,963
Unrealized Losses
Less Than 12 Months	21
12 Months or More	0
Total	$ 21
GSE residential CMOs
Number of Securities
Less Than 12 Months | security	52	4
12 Months or More | security	15	14
Total | security	67	18
Fair Value
Less Than 12 Months	$ 158,439	$ 12,710
12 Months or More	56,443	56,765
Total	214,882	69,475
Unrealized Losses
Less Than 12 Months	729	186
12 Months or More	6,080	6,014
Total	$ 6,809	$ 6,200
Non-agency CMOs
Number of Securities
Less Than 12 Months | security	2	3
12 Months or More | security	4	4
Total | security	6	7
Fair Value
Less Than 12 Months	$ 8,816	$ 11,531
12 Months or More	16,636	16,334
Total	25,452	27,865
Unrealized Losses
Less Than 12 Months	218	83
12 Months or More	2,248	3,726
Total	$ 2,466	$ 3,809
Asset-backed
Number of Securities
Less Than 12 Months | security	4	1
12 Months or More | security	9	15
Total | security	13	16
Fair Value
Less Than 12 Months	$ 11,964	$ 865
12 Months or More	44,130	74,407
Total	56,094	75,272
Unrealized Losses
Less Than 12 Months	17	4
12 Months or More	985	2,090
Total	$ 1,002	$ 2,094