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LOANS AND ALLOWANCE FOR LOAN LOSSES - Schedule of Impaired Loans That Are TDRs (Detail) $ in Thousands	Dec. 31, 2017 USD ($) contract	Dec. 31, 2016 USD ($) contract
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	23	22
Recorded Investment | $	$ 1,958	$ 1,971
Accruing
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	13	9
Recorded Investment | $	$ 1,183	$ 930
Accruing | Commercial real estate | Owner-occupied
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	1	0
Recorded Investment | $	$ 52	$ 0
Accruing | Residential mortgage | First lien
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	11	8
Recorded Investment | $	$ 1,102	$ 896
Accruing | Residential mortgage | Home equity - lines of credit
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	1	1
Recorded Investment | $	$ 29	$ 34
Nonaccruing
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	10	13
Recorded Investment | $	$ 775	$ 1,041
Nonaccruing | Commercial real estate | Owner-occupied
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	1	0
Recorded Investment | $	$ 57	$ 0
Nonaccruing | Residential mortgage | First lien
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	8	12
Recorded Investment | $	$ 715	$ 1,035
Nonaccruing | Installment and other loans
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	1	1
Recorded Investment | $	$ 3	$ 6

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Financing Receivable Modified Balance End Of Period Number Of Contract

+ References

No definition available.

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- Definition

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+ References

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- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554

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