FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK - Summary Of Financial Instruments With Off-Balance Sheet Credit Risk (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total commitments to extend credit and available credit lines	$ 4,181,836	$ 3,729,119
Commercial real estate development and construction
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total commitments to extend credit and available credit lines	887,154	621,725
Residential real estate-development and construction
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total commitments to extend credit and available credit lines	798,607	885,806
Real estate-residential mortgage
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total commitments to extend credit and available credit lines	21,118	54,072
Lines of credit, principally home equity and business lines
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total commitments to extend credit and available credit lines	2,397,533	2,096,874
Standby letters of credit
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total commitments to extend credit and available credit lines	$ 77,424	$ 70,642