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OTHER REAL ESTATE OWNED - Activities in Other Real Estate Owned (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Other Real Estate and Foreclosed Assets [Roll Forward]    
Balance at beginning of period $ 1,796 $ 2,502
Additions 0 1,171
Sales and net direct write-downs (719) (325)
Net change in valuation allowance (53) (3)
Balance at end of period $ 1,024 $ 3,345