LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES - Nonaccrual Loans and Loans Past Due 90 Days Still on Accrual (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans past due 90 days or more and still accruing	$ 0	$ 0
Nonaccrual loans and leases	16,222	14,942
Specific allowance on non accrual loans	0	0
Non-Traditional Mortgages (NTM)
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans past due 90 days or more and still accruing	0	0
Nonaccrual loans and leases	468	467
Traditional Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans past due 90 days or more and still accruing	0	0
Nonaccrual loans and leases	$ 15,754	$ 14,475