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FINANCIAL INSTRUMENTS WITH OFF-BALANCE-SHEET RISK - Commitments and Conditional Obligations (Detail) - USD ($) $ in Thousands | Sep. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Revolving, open ended home equity loans |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Contract or Notional Amount | $ 122,959 | $ 110,473
1-4 family residential construction loans |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Contract or Notional Amount | 10,624 | 6,153
Commercial real estate, construction and land development loans |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Contract or Notional Amount | 44,765 | 14,174
Commercial, industrial and other loans |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Contract or Notional Amount | 122,136 | 84,480
Standby letters of credit |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Contract or Notional Amount | $ 7,865 | $ 6,510

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