FAIR VALUE - Other information (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2019	Dec. 31, 2018
Fair value assets and liabilities measured on recurring and nonrecurring basis
Total securities available for sale	$ 15,913	$ 18,888
SBA servicing assets	18,000	16,500
States and political subdivisions
Fair value assets and liabilities measured on recurring and nonrecurring basis
Total securities available for sale	1,276	1,213
Mortgage-backed GSE residential
Fair value assets and liabilities measured on recurring and nonrecurring basis
Total securities available for sale	2,116	2,492
Recurring
Fair value assets and liabilities measured on recurring and nonrecurring basis
Total securities available for sale	15,913	18,888
SBA servicing assets	8,538	8,419
Interest only strip	28	27
Assets	24,479	27,334
Recurring \| Obligations of U.S. Government entities and agencies
Fair value assets and liabilities measured on recurring and nonrecurring basis
Total securities available for sale	12,521	15,183
Recurring \| States and political subdivisions
Fair value assets and liabilities measured on recurring and nonrecurring basis
Total securities available for sale	1,276	1,213
Recurring \| Mortgage-backed GSE residential
Fair value assets and liabilities measured on recurring and nonrecurring basis
Total securities available for sale	2,116	2,492
Non-recurring fair value measurements
Fair value assets and liabilities measured on recurring and nonrecurring basis
Impaired loans	3,477	3,472
Total Gains (Losses)	257	169
Level 2 \| Recurring
Fair value assets and liabilities measured on recurring and nonrecurring basis
Total securities available for sale	3,392	3,705
Assets	3,392	3,705
Level 2 \| Recurring \| States and political subdivisions
Fair value assets and liabilities measured on recurring and nonrecurring basis
Total securities available for sale	1,276	1,213
Level 2 \| Recurring \| Mortgage-backed GSE residential
Fair value assets and liabilities measured on recurring and nonrecurring basis
Total securities available for sale	2,116	2,492
Level 3 \| Recurring
Fair value assets and liabilities measured on recurring and nonrecurring basis
Total securities available for sale	12,521	15,183
SBA servicing assets	8,538	8,419
Interest only strip	28	27
Assets	21,087	23,629
Level 3 \| Recurring \| Obligations of U.S. Government entities and agencies
Fair value assets and liabilities measured on recurring and nonrecurring basis
Total securities available for sale	12,521	15,183
Level 3 \| Non-recurring fair value measurements
Fair value assets and liabilities measured on recurring and nonrecurring basis
Impaired loans	$ 3,477	$ 3,472

Amount of gains (losses) recognized from assets and liabilities measured at fair value.

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- Definition

Fair value portion of impaired loans.

+ References

No definition available.

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- Definition

Fair value of an asset representing interest only strips.

+ References

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942338&loc=SL82898722-210454

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 45
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- Definition

Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745

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