LOANS AND ALLOWANCE FOR LOAN LOSSES - Impaired Loans Narrative (Details) $ in Thousands	12 Months Ended
Dec. 31, 2018 USD ($) relationship property method loan note	Dec. 31, 2017 USD ($)
Financing Receivable, Impaired [Line Items]
Total valuation methods used on impaired loans \| method	3
Impaired loans with no specific allowance, recorded investment	$ 6,051	$ 7,601
Foreclosure and reclassification to other real estate owned	720
Reclassification to performing loans	620
Normal loan amortization	$ 153
Number of notes \| note	2
Minimum
Financing Receivable, Impaired [Line Items]
Outstanding balance on loans acquired	$ 11
Maximum
Financing Receivable, Impaired [Line Items]
Outstanding balance on loans acquired	152
Commercial
Financing Receivable, Impaired [Line Items]
Impaired loans with no specific allowance, recorded investment	$ 3,007	5,910
Number of impaired loans \| loan	3
Impaired loans sold	$ 5,400
Impaired loans, principal curtailment	738
Charge-offs incurred on largest impaired loan	708
Recently identified impaired loans, recorded investment	$ 3,700
Recorded investment (percentage)	66.10%
Additional recently identified loans, recorded investment	$ 500
Number of loan relationships \| relationship	2
Number of loan relationships causing increase in impaired loans \| loan	6
Commercial \| Commercial Real Estate
Financing Receivable, Impaired [Line Items]
Impaired loans with no specific allowance, recorded investment	$ 396	2,814
Residential
Financing Receivable, Impaired [Line Items]
Increase (decrease) in impaired loans (percentage)	43.00%
Impaired loans with no specific allowance, recorded investment	$ 2,831	1,569
Recently identified impaired loans, recorded investment	$ 1,600
Recorded investment (percentage)	28.60%
Number foreclosed properties held \| property	13
Foreclosed properties held	$ 914
Number of loan relationships causing increase in impaired loans \| relationship	2
Number of borrowers \| property	2
Consumer
Financing Receivable, Impaired [Line Items]
Impaired loans with no specific allowance, recorded investment	$ 90	$ 109
Recently identified impaired loans, recorded investment	$ 213
Recorded investment (percentage)	5.30%
Number of additional collateralized loans in the process of foreclosure \| loan	3
Investment in loans in the process of foreclosure	$ 1,500
Related allowance	0
Total Recorded Investment In Impaired Financing Receivables
Financing Receivable, Impaired [Line Items]
Impaired loans with no specific allowance, recorded investment	5,600
Total Recorded Investment In Impaired Financing Receivables \| Credit Concentration Risk
Financing Receivable, Impaired [Line Items]
Increase (decrease) in impaired loans	$ (2,800)
Increase (decrease) in impaired loans (percentage)	(17.90%)
Total Recorded Investment In Impaired Financing Receivables \| Portfolio Risk \| Commercial
Financing Receivable, Impaired [Line Items]
Increase (decrease) in impaired loans (percentage)	86.50%
Commercial Loan Relationship One \| Commercial \| Senior Healthcare Facility
Financing Receivable, Impaired [Line Items]
Impaired financing receivable participation, largest loan	$ 1,800
Commercial Loan Relationship One \| Residential
Financing Receivable, Impaired [Line Items]
Number foreclosed properties held \| property	4
Foreclosed properties held	$ 395
Commercial Loan Relationship Two \| Commercial \| Commercial Real Estate
Financing Receivable, Impaired [Line Items]
Impaired financing receivable participation, largest loan	$ 1,400
Commercial Loan Relationship Two \| Residential
Financing Receivable, Impaired [Line Items]
Number foreclosed properties held \| property	7
Foreclosed properties held	$ 174
Other Loan Relationships \| Residential
Financing Receivable, Impaired [Line Items]
Number foreclosed properties held \| property	2
Foreclosed properties held	$ 345
Senior Healthcare Facility \| Commercial \| Senior Healthcare Facility
Financing Receivable, Impaired [Line Items]
Impaired loans sold	3,400
Retail Strip Center \| Commercial \| Commercial Real Estate
Financing Receivable, Impaired [Line Items]
Impaired loans sold	1,100
Sold participation	579
Developed Commercial Pad Site \| Commercial \| Development Loan
Financing Receivable, Impaired [Line Items]
Impaired loans sold	$ 874

Financing Receivables, Impaired, Troubled Debt Restructuring, Curtailments

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Impaired Financing Receivable, Additional Recently Identified Loans, Recorded Investment

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Represents information pertaining to impaired loans participation.

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Impaired Financing Receivable, Reclassification to Performing Loans

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Impaired Financing Receivable Recorded Investment, Foreclosures

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Represents the recorded investment amount of loans in process of foreclosure.

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Impaired Financing Receivable, Recorded Investment, Increase (Decrease), Percentage

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Represents the outstanding balance of an impaired loan that is primarily responsible for the overall increase (decrease) of impaired loans during the period.

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Impaired Financing Receivable, in Process of Foreclosure, Related Allowance

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Amount of loans that have been declared as charge off/unlikely to be collected.

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Represents the amount refinanced by the reporting entity relating to loans that were acquired in December 2013 in the northern Virginia area.

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Number Of Impaired Loans

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Represents the number of impaired loans primarily responsible for the increase in impaired loans during the period.

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Represents the number of loans in process of foreclosure.

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Number of Impaired Loans Causing Increase in Impaired Loans

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Number of Loan Relationships Causing Increase (Decrease) in Impaired Loans

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Number of Loan Relationships Causing Increase in Impaired Loans

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Sale Of Loan Receivable, Participation Sold

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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.

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Amount of investment in impaired financing receivables for which there is no related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524

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The cash inflow associated with the sale of loans receivables arising from the financing of goods and services.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585

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