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FINANCIAL INSTRUMENTS WITH OFF-BALANCE-SHEET RISK - Commitments and Conditional Obligations (Detail) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Revolving, open ended home equity loans    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Contract or Notional Amount $ 115,813 $ 110,473
1-4 family residential construction loans    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Contract or Notional Amount 5,464 6,153
Commercial real estate, construction and land development loans    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Contract or Notional Amount 41,065 14,174
Commercial, industrial and other loans    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Contract or Notional Amount 87,971 84,480
Standby letters of credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Contract or Notional Amount $ 7,002 $ 6,510