DEPOSITS - Components of Interest Expense on Deposits (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Deposits [Abstract]
Interest expense on deposits	$ 19,497	$ 17,305
Accretion Of Premium From Acquisitions	(1)	(2)
Amortization of broker placement fees	158	189
Interest expense on deposits	$ 19,654	$ 17,492