FAIR VALUE - Schedule of Quantitative Information About Nonrecurring Level 3 Fair Value Measurements (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2018	Dec. 31, 2017
Other real estate owned \| Appraisal value of collateral \| Minimum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount rate	10.00%	10.00%
Other real estate owned \| Appraisal value of collateral \| Maximum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount rate	20.00%	20.00%
Other real estate owned \| Appraisal value of collateral \| Weighted Average
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount rate	16.00%	16.00%
Assets at fair value on a nonrecurring basis \| Significant Other Unobservable Inputs (Level 3) \| Impaired loans \| Fair value of collateral - sales comparison approach
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value	$ 9,414	$ 6,206
Assets at fair value on a nonrecurring basis \| Significant Other Unobservable Inputs (Level 3) \| Other real estate owned \| Appraisal value of collateral
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value	$ 1,926	$ 2,244
Real Estate \| Impaired loans \| Fair value of collateral - sales comparison approach \| Minimum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount rate	10.00%	10.00%
Real Estate \| Impaired loans \| Fair value of collateral - sales comparison approach \| Maximum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount rate	20.00%	20.00%
Real Estate \| Impaired loans \| Fair value of collateral - sales comparison approach \| Weighted Average
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount rate	16.00%	16.00%
Equipment \| Impaired loans \| Fair value of collateral - sales comparison approach \| Minimum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount rate	10.00%	10.00%
Equipment \| Impaired loans \| Fair value of collateral - sales comparison approach \| Maximum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount rate	20.00%	20.00%
Equipment \| Impaired loans \| Fair value of collateral - sales comparison approach \| Weighted Average
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount rate	19.40%	3.60%

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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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.

+ References

No definition available.

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- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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