INVESTMENTS (Gross Realized Gains and Losses on All Investments) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investments [Abstract]
Gross realized gains from sales of investments available-for-sale	$ 14	$ 2,519	$ 0
Gross realized losses from sales of investments available-for-sale	(2)	(2,343)	0
Net gains or (losses) from calls of investments available-for-sale	65	14	32
Gross realized gains from sales of equity securities	0	0	1,241
Net securities gains	$ 77	$ 190	$ 1,273