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LOANS AND ALLOWANCE FOR LOAN LOSSES - Schedule of Number of Loans Modified (Detail) $ in Thousands | 12 Months Ended
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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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- Definition 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 + Details
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