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OTHER REAL ESTATE OWNED - Activities in Other Real Estate Owned (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Other Real Estate and Foreclosed Assets [Roll Forward]        
Balance at beginning of period $ 1,024 $ 3,345 $ 1,796 $ 2,502
Additions 434 632 434 1,803
Sales and net direct write-downs (992) (710) (1,711) (1,035)
Net change in valuation allowance 244 0 191 (3)
Balance at end of period $ 710 $ 3,267 $ 710 $ 3,267