LOANS - Recorded investment and number of modifications for TDRs (Details) $ in Thousands	Dec. 31, 2018 USD ($) Integer	Dec. 31, 2017 USD ($) Integer
Residential 1-4 family
Quanity, TDRs with Modifications that Subsequently Defaulted \| Integer	1
Balance, TDRs with Modifications that Subsequently Defaulted \| $	$ 67
Total
Quanity, TDRs with Modifications that Subsequently Defaulted \| Integer	1
Balance, TDRs with Modifications that Subsequently Defaulted \| $	$ 67

The number of derivative instruments of a particular derivative asset or group of derivative assets held by the entity.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959

Name:	us-gaap_DerivativeAssetNumberOfInstrumentsHeld
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant