LOANS (Loan Portfolio Segment Balances) (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 6,722,992	$ 6,705,232
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	813,525	801,019
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	453,346	466,764
Commercial Real Estate Portfolio Segment [Member] | Commercial Owner Occupied RE [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,305,682	1,288,677
Commercial Real Estate Portfolio Segment [Member] | Commercial Investor RE [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	2,241,240	2,169,156
Commercial Real Estate Portfolio Segment [Member] | Commercial AD&C [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	643,114	684,010
Residential Portfolio Segment [Member] | Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,116,512	1,149,327
Residential Portfolio Segment [Member] | Residential Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 149,573	$ 146,279