LOANS - Loan Portfolio Segment Balances (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 11,396,706	$ 9,967,091
Commercial investor real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	5,130,094	4,141,346
Commercial owner-occupied real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,775,037	1,690,881
Commercial AD&C
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,090,028	1,088,094
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,287,933	937,570
Residential construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	224,772	197,652
Commercial real estate: | Commercial investor real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	5,130,094	4,141,346
Commercial real estate: | Commercial owner-occupied real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,775,037	1,690,881
Commercial real estate: | Commercial AD&C
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,090,028	1,088,094
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	9,451,044	8,402,155
Commercial | Commercial business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,455,885	1,481,834
Residential real estate: | Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,287,933	937,570
Residential real estate: | Residential construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	224,772	197,652
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	432,957	429,714
Total residential and consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 1,945,662	$ 1,564,936