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GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Other Intangible Assets (Detail) - USD ($) $ in Thousands | Sep. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Net Carrying Value | $ 10,219 |
Trade name intangibles |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Indefinite-lived intangible assets |  | $ 90
Core deposit intangibles |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 30,904 | 30,904
Accumulated Amortization | 20,685 | 17,656
Net Carrying Value | $ 10,219 | 13,248
Customer relationship intangible |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value |  | 670
Accumulated Amortization |  | 391
Net Carrying Value |  | $ 279

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