LOANS AND ALLOWANCE FOR LOAN LOSSES, Troubled Debt Restructuring by Portfolio Segment (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2018 USD ($) loan	Sep. 30, 2017 USD ($) loan	Sep. 30, 2018 USD ($) loan	Sep. 30, 2017 USD ($) loan
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	2	3	3	5
Pre-Modification Outstanding Recorded Investment	$ 234,000	$ 429,000	$ 397,000	$ 895,000
Post-Modification Outstanding Recorded Investment	234,000	448,000	420,000	914,000
Specific Reserve	$ 57,000	$ 29,000	96,000	$ 44,000
Home Equity Loan
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan				1
Pre-Modification Outstanding Recorded Investment				$ 315,000
Post-Modification Outstanding Recorded Investment				$ 315,000
Specific Reserve			$ 114,000
Residential Real Estate
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	1	1	2	1
Pre-Modification Outstanding Recorded Investment	$ 68,000	$ 148,000	$ 231,000	$ 148,000
Post-Modification Outstanding Recorded Investment	68,000	156,000	254,000	156,000
Specific Reserve	$ 12,000	$ 29,000	$ 51,000	$ 29,000
Residential Real Estate | Contractual Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan		1		1
Pre-Modification Outstanding Recorded Investment		$ 134,000		$ 134,000
Post-Modification Outstanding Recorded Investment		$ 145,000		$ 145,000
Residential Real Estate | Extended Maturity
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan		1		2
Pre-Modification Outstanding Recorded Investment		$ 147,000		$ 298,000
Post-Modification Outstanding Recorded Investment		$ 147,000		298,000
Specific Reserve				$ 15,000
Residential Real Estate | Payment Deferral [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	1		1
Pre-Modification Outstanding Recorded Investment	$ 166,000		$ 166,000
Post-Modification Outstanding Recorded Investment	166,000		166,000
Specific Reserve	$ 45,000		$ 45,000