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OTHER REAL ESTATE OWNED - Activities in Other Real Estate Owned (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Other Real Estate and Foreclosed Assets [Roll Forward]        
Balance at beginning of period $ 3,267 $ 429 $ 2,502 $ 1,097
Additions 1,265 540 3,068 844
Sales and net direct write-downs (716) (678) (1,751) (1,641)
Net change in valuation allowance (134) (16) (137) (25)
Balance at end of period $ 3,682 $ 275 $ 3,682 $ 275