LOANS AND LEASES (Loan Portfolio Segment Balances) (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 4,133,171	$ 3,927,808
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	451,570	467,286
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	458,058	456,657
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	2,633,446
Commercial Real Estate Portfolio Segment [Member] | Commercial Owner Occupied Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	797,629	775,552
Commercial Real Estate Portfolio Segment [Member] | Commercial Investor Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,069,988	928,113
Commercial Real Estate Portfolio Segment [Member] | Commercial Acquisition, Development and Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	314,259	308,279
Commercial Real Estate Portfolio Segment [Member] | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	451,570
Residential Portfolio Segment [Member] | Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	871,766	841,692
Residential Portfolio Segment [Member] | Residential Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 169,901	$ 150,229