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FINANCIAL INSTRUMENTS WITH OFF-BALANCE-SHEET RISK - Commitments and Conditional Obligations (Detail) - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Home equity lines of credit |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Commitments to fund | $ 130,651 | $ 126,811
1-4 family residential construction loans |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Commitments to fund | 10,142 | 7,820
Commercial real estate, construction and land development loans |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Commitments to fund | 37,315 | 43,830
Commercial, industrial and other loans |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Commitments to fund | 122,771 | 111,884
Standby letters of credit |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Commitments to fund | $ 7,044 | $ 7,097

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