LOANS, TROUBLED DEBT RESTRUCTURINGS, MODIFICATION TYPE (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	$ 23	$ 2,393	$ 304
Commercial & industrial
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	0	0	0
Commercial, secured by real estate
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	0	2,215	74
Residential real estate
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	9	139	221
Consumer
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	14	39	9
Term Modification
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	14	1,577	304
Term Modification | Commercial & industrial
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	0	0	0
Term Modification | Commercial, secured by real estate
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	0	1,539	74
Term Modification | Residential real estate
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	0	38	221
Term Modification | Consumer
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	14	0	9
Rate Modification
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	0	75	0
Rate Modification | Commercial & industrial
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	0	0	0
Rate Modification | Commercial, secured by real estate
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	0	0	0
Rate Modification | Residential real estate
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	0	47	0
Rate Modification | Consumer
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	0	28	0
Interest Only
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	0	304	0
Interest Only | Commercial & industrial
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	0	0	0
Interest Only | Commercial, secured by real estate
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	0	304	0
Interest Only | Residential real estate
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	0	0	0
Interest Only | Consumer
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	0	0	0
Principal Forgiveness [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	9	0	0
Principal Forgiveness [Member] | Commercial & industrial
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	0	0	0
Principal Forgiveness [Member] | Commercial, secured by real estate
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	0	0	0
Principal Forgiveness [Member] | Residential real estate
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	9	0	0
Principal Forgiveness [Member] | Consumer
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	0	0	0
Combination
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	0	437	0
Combination | Commercial & industrial
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	0	0	0
Combination | Commercial, secured by real estate
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	0	372	0
Combination | Residential real estate
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	0	54	0
Combination | Consumer
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Balance	$ 0	$ 11	$ 0