BORROWINGS (Retail Repurchase Agreements And Other Short Term Borrowings) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Retail Purchase Agreements [Member]
Short-term Debt [Line Items]
Other short term borrowings	$ 138,605	$ 137,429	$ 119,359
Other short term borrowings, average	134,070	142,938	133,356
Other short term borrowings, maximum month end balance	$ 152,685	$ 154,435	$ 147,459
Interest rate	0.58%	0.51%	0.24%
Average Interest Rate	0.54%	0.34%	0.25%
Federal funds purchased [Member]
Short-term Debt [Line Items]
Other short term borrowings	$ 75,000	$ 0	$ 0
Other short term borrowings, average	17,373	0	0
Other short term borrowings, maximum month end balance	$ 75,000	$ 0	$ 0
Interest rate	1.62%
Average Interest Rate	2.43%	0.00%	0.00%