EARNINGS PER SHARE - Basic earnings per share of common stock (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Basic and diluted:
Net income	$ 338	$ 308	$ 654	$ 591
Weighted average common shares outstanding (in shares)	2,792,656	2,776,546	2,791,824	2,776,053
Basic and dilutive net income per share (in dollars per share)	$ 0.12	$ 0.11	$ 0.23	$ 0.21