INVESTMENT SECURITIES - Summary of Investment Securities With Unrealized Losses (Detail) $ in Thousands	Dec. 31, 2021 USD ($) security	Dec. 31, 2020 USD ($) security
Number of Securities
Less Than 12 Months | security	37	7
12 Months or More | security	3	25
Total | security	40	32
Fair Value
Less Than 12 Months	$ 190,192	$ 54,268
12 Months or More	34,180	225,564
Total	224,372	279,832
Unrealized Losses
Less Than 12 Months	3,693	2,893
12 Months or More	162	3,695
Total	$ 3,855	$ 6,588
US Treasury Securities
Number of Securities
Less Than 12 Months | security	3
12 Months or More | security	0
Total | security	3
Fair Value
Less Than 12 Months	$ 19,702
12 Months or More	0
Total	19,702
Unrealized Losses
Less Than 12 Months	382
12 Months or More	0
Total	$ 382
States and political subdivisions
Number of Securities
Less Than 12 Months | security	12	1
12 Months or More | security	0	0
Total | security	12	1
Fair Value
Less Than 12 Months	$ 45,522	$ 9,079
12 Months or More	0	0
Total	45,522	9,079
Unrealized Losses
Less Than 12 Months	673	1,125
12 Months or More	0	0
Total	$ 673	$ 1,125
GSE residential MBSs
Number of Securities
Less Than 12 Months | security	9
12 Months or More | security	0
Total | security	9
Fair Value
Less Than 12 Months	$ 37,899
12 Months or More	0
Total	37,899
Unrealized Losses
Less Than 12 Months	578
12 Months or More	0
Total	$ 578
GSE residential CMOs
Number of Securities
Less Than 12 Months | security	7	3
12 Months or More | security	0	0
Total | security	7	3
Fair Value
Less Than 12 Months	$ 41,163	$ 23,954
12 Months or More	0	0
Total	41,163	23,954
Unrealized Losses
Less Than 12 Months	944	1,071
12 Months or More	0	0
Total	$ 944	$ 1,071
Non-agency CMOs
Number of Securities
Less Than 12 Months | security	3
12 Months or More | security	0
Total | security	3
Fair Value
Less Than 12 Months	$ 24,661
12 Months or More	0
Total	24,661
Unrealized Losses
Less Than 12 Months	978
12 Months or More	0
Total	$ 978
Private label commercial CMOs
Number of Securities
Less Than 12 Months | security		1
12 Months or More | security		10
Total | security		11
Fair Value
Less Than 12 Months		$ 4,314
12 Months or More		42,403
Total		46,717
Unrealized Losses
Less Than 12 Months		685
12 Months or More		1,077
Total		$ 1,762
Asset-backed
Number of Securities
Less Than 12 Months | security	3	2
12 Months or More | security	3	15
Total | security	6	17
Fair Value
Less Than 12 Months	$ 21,245	$ 16,921
12 Months or More	34,180	183,161
Total	55,425	200,082
Unrealized Losses
Less Than 12 Months	138	12
12 Months or More	162	2,618
Total	$ 300	$ 2,630