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LOANS AND ALLOWANCE FOR LOAN LOSSES - Schedule of Number of Loans Modified (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($) contract	Dec. 31, 2016 USD ($) contract
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract		4
Pre- Modification Investment Balance		$ 6,394
Post- Modification Investment Balance		$ 6,394
Commercial Real Estate | Owner-occupied
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	2
Pre- Modification Investment Balance	$ 119
Post- Modification Investment Balance	$ 119
Commercial Real Estate | Non-owner occupied
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract		1
Pre- Modification Investment Balance		$ 6,095
Post- Modification Investment Balance		$ 6,095
Residential mortgage | First lien
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract		2
Pre- Modification Investment Balance		$ 265
Post- Modification Investment Balance		$ 265
Residential mortgage | Home equity - lines of credit
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract		1
Pre- Modification Investment Balance		$ 34
Post- Modification Investment Balance		$ 34

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Number of financing receivables that have been modified by troubled debt restructurings.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

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-Name Accounting Standards Codification
-Topic 310
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-Section 50
-Paragraph 33
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
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