CREDIT QUALITY ASSESSMENT (Summary Information on Allowance for Loan and Lease Loss Activity) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Credit Quality Assessment [Abstract]
Balance at beginning of year			$ 44,067	$ 40,895	$ 40,895
Provision for loan losses	$ 1,322	$ 2,957	1,516	4,193	5,546
Loan and lease charge-offs			(824)	(2,272)	(3,134)
Loan and lease recoveries			320	568	760
Net charge-offs			(504)	(1,704)	(2,374)
Balance at period end	$ 45,079	$ 43,384	$ 45,079	$ 43,384	$ 44,067