INVESTMENT SECURITIES - Schedule of amortized cost and fair value of securities available-for-sale (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 28,526	$ 32,504
Gross Unrealized/Unrecognized Gains	4	81
Gross Unrealized/Unrecognized Losses	(1,040)	(428)
Fair Value	27,490	32,157
Residential mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	22,911	24,856
Gross Unrealized/Unrecognized Gains	1	70
Gross Unrealized/Unrecognized Losses	(787)	(242)
Fair Value	22,125	24,684
Residential collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,340	2,809
Gross Unrealized/Unrecognized Gains	0	0
Gross Unrealized/Unrecognized Losses	(135)	(103)
Fair Value	2,205	2,706
Commercial collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		1,581
Gross Unrealized/Unrecognized Gains	0	0
Gross Unrealized/Unrecognized Losses	0	(31)
Fair Value		1,550
Municipal bond
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,080	1,098
Gross Unrealized/Unrecognized Gains	3	11
Gross Unrealized/Unrecognized Losses	0	0
Fair Value	1,083	1,109
CRA mutual fund
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,195	2,160
Gross Unrealized/Unrecognized Gains	0	0
Gross Unrealized/Unrecognized Losses	(118)	(52)
Fair Value	$ 2,077	$ 2,108

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on 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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-SubTopic 10
-Section 50
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Amortized cost 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 320
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-Section 50
-Paragraph 2
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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 320
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109979856&loc=d3e26610-111562

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