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LOANS AND ALLOWANCE FOR LOAN LOSSES - Schedule of Number of Loans Modified (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) contract	Dec. 31, 2015 USD ($) contract	Dec. 31, 2014 USD ($) contract
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	4	1	20
Pre- Modification Investment Balance	$ 6,394	$ 59	$ 1,912
Post- Modification Investment Balance	$ 6,394	$ 59	$ 1,824
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	1	19
Pre- Modification Investment Balance	$ 265	$ 59	$ 1,876
Post- Modification Investment Balance	$ 265	$ 59	$ 1,810
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
Residential mortgage | Installment and other loans
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract			1
Pre- Modification Investment Balance			$ 36
Post- Modification Investment Balance			$ 14

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Number of 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 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524

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