SHAREHOLDERS’ EQUITY AND REGULATORY CAPITAL - Narrative (Detail) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Jan. 21, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	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		$ 1,400
Shares repurchased under the program, price per share (in dollars per share)		$ 17.38
Cash dividend declared by the Board (in dollars per share)		$ 0.60	$ 0.51	$ 0.42
Amount available for dividend distribution		$ 30,700
Maximum amount available to loan nonbank affiliates		$ 196
Subsequent Event
Class of Stock [Line Items]
Cash dividend declared by the Board (in dollars per share)	$ 0.17
Maximum
Class of Stock [Line Items]
Outstanding shares of common stock authorized to be repurchased (as a percent)					5.00%