SHORT-TERM BORROWINGS - Summary of the Use of Securities Sold Under Agreements to Repurchase (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
Balance at year-end	$ 8,269	$ 9,069	$ 43,576
Weighted average interest rate at year-end	1.31%	1.22%	0.56%
Average balance during the year	$ 8,830	$ 9,715	$ 43,205
Average interest rate during the year	1.28%	0.82%	0.45%
Maximum month-end balance during the year	$ 12,774	$ 14,591	$ 55,270
Fair value of securities underlying the agreements at year-end	$ 13,062	$ 17,942	$ 53,485