GOODWILL AND OTHER INTANGIBLES - Gross Amount and Accumulated Amortization of Other Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Finite Lived Intangible Assets [Line Items]
Net carrying amount	$ 21,118	$ 29,934
Core Deposits [Member]
Finite Lived Intangible Assets [Line Items]
Gross amount	87,544	87,544
Accumulated amortization	(66,644)	(58,973)
Net carrying amount	$ 20,900	$ 28,571
Remaining amortization period (in years)	7 years	8 years
Customer Relationships [Member] | Credit Card [Member]
Finite Lived Intangible Assets [Line Items]
Gross amount	$ 3,800	$ 3,800
Accumulated amortization	(3,595)	(2,602)
Net carrying amount	$ 205	$ 1,198
Remaining amortization period (in years)	8 months 12 days	1 year 8 months 12 days
Insurance Customer Relationship Intangible [Member]
Finite Lived Intangible Assets [Line Items]
Gross amount	$ 1,067	$ 1,067
Accumulated amortization	(1,054)	(902)
Net carrying amount	$ 13	$ 165
Remaining amortization period (in years)	1 month 6 days	1 year 1 month 6 days