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SHAREHOLDERS’ EQUITY AND REGULATORY CAPITAL - Narrative (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Oct. 17, 2018
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Sep. 30, 2015
Class of Stock [Line Items]          
Common stock reserved to be issued under dividend reinvestment and stock purchase plan (in shares)   1,045,000      
Shares available to be issued under the plan (in shares)   665,000      
Outstanding shares of common stock authorized to be repurchased (in shares)         416,000
Shares repurchased under the program (in shares)   82,725      
Total cost of shares repurchased under the program   $ 1,438      
Shares repurchased under the program, price per share (in dollars per share)   $ 17.38      
Cash dividend declared by the Board (in dollars per share) $ 0.15 $ 0.51 $ 0.42 $ 0.35  
Amount available for dividend distribution   $ 20,490      
Maximum amount available to loan nonbank affiliates   $ 17,789      
Maximum          
Class of Stock [Line Items]          
Outstanding shares of common stock authorized to be repurchased (as a percent)         5.00%