INTEREST RATE SWAPS - INTEREST EXPENSE (Details) - Interest rate swap - Cash flow hedge - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Information about derivatives and swaps
Interest expense swap on money market deposits	$ 14	$ 34
Interest expense swap on FHLB Advance	12	32
Total interest expense on swap transaction	$ 26	$ 66

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_DerivativeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration