LOANS AND LEASES - Originated Troubled Debt Restructurings, Payment Default (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018 USD ($) Contract	Sep. 30, 2017 USD ($) Contract	Sep. 30, 2018 USD ($) Contract	Sep. 30, 2017 USD ($) Contract
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	10	48	16	115
Recorded Investment | $	$ 1,476	$ 856	$ 1,895	$ 1,442
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	3	1	3	1
Recorded Investment | $	$ 1,078	$ 463	$ 1,078	$ 463
Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	2	0	1	3
Recorded Investment | $	$ 16	$ 0	$ 9	$ 326
Total Commercial Loans and Leases [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	5	1	4	4
Recorded Investment | $	$ 1,094	$ 463	$ 1,087	$ 789
Direct Installment [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	3	39	5	91
Recorded Investment | $	$ 274	$ 265	$ 332	$ 278
Residential Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	2	1	4	4
Recorded Investment | $	$ 108	$ 80	$ 224	$ 264
Indirect Installment [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	4	0	12
Recorded Investment | $	$ 0	$ 22	$ 0	$ 22
Consumer Lines of Credit [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	3	3	4
Recorded Investment | $	$ 0	$ 26	$ 252	$ 89
Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	5	47	12	111
Recorded Investment | $	$ 382	$ 393	$ 808	$ 653