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GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Other Intangible Assets (Detail) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]    
Net Carrying Value $ 21,125  
Trade name intangibles    
Indefinite-lived Intangible Assets [Line Items]    
Indefinite-lived intangible assets 780 $ 780
Core deposit intangibles    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value 30,904 31,162
Accumulated Amortization 10,259 7,237
Net Carrying Value 20,645 23,925
Customer relationship intangible    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value 670 670
Accumulated Amortization 190 123
Net Carrying Value $ 480 $ 547