FAIR VALUE - Summary of Additional Qualitative Information (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2017	Dec. 31, 2016
Appraisal of collateral \| Impaired loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Valuation Techniques	Appraisal of collateral	Appraisal of collateral
Appraisal of collateral \| Foreclosed real estate
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Valuation Techniques	Appraisal of collateral	Appraisal of collateral
Fair Value, Measurements, Nonrecurring \| Impaired loans \| Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate range (percentage)	0.00%	0.00%
Fair Value, Measurements, Nonrecurring \| Impaired loans \| Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate range (percentage)	38.00%	41.00%
Fair Value, Measurements, Nonrecurring \| Foreclosed real estate \| Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate range (percentage)	10.00%	10.00%
Fair Value, Measurements, Nonrecurring \| Foreclosed real estate \| Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate range (percentage)	10.00%	18.00%
Fair Value, Measurements, Nonrecurring \| Appraisal of collateral \| Impaired loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Estimate	$ 3,080	$ 4,350
Fair Value, Measurements, Nonrecurring \| Appraisal of collateral \| Impaired loans \| Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate range (percentage)	10.00%	10.00%
Fair Value, Measurements, Nonrecurring \| Appraisal of collateral \| Impaired loans \| Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate range (percentage)	75.00%	75.00%
Fair Value, Measurements, Nonrecurring \| Appraisal of collateral \| Foreclosed real estate
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Estimate	$ 22	$ 88
Fair Value, Measurements, Nonrecurring \| Appraisal of collateral \| Foreclosed real estate \| Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate range (percentage)	17.00%	13.00%
Fair Value, Measurements, Nonrecurring \| Appraisal of collateral \| Foreclosed real estate \| Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate range (percentage)	17.00%	17.00%

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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- Definition

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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Description of the inputs and valuation technique(s) used to measure fair value.

+ 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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