LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES - Allowance for Loan and Lease Losses (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	$ 37,483	$ 34,787	$ 35,533	$ 29,480
Loans and leases charged off	(393)	(788)	(1,267)	(1,224)
Recoveries of loans and leases previously charged off	551	40	1,285	309
Provision for loan and lease losses	2,592	735	4,682	6,209
Balance at end of period	$ 40,233	$ 34,774	$ 40,233	$ 34,774