EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Basic earnings per share [Abstract]
Income available to common stockholders	$ 6,550	$ 5,368
Weighted average common shares outstanding (in shares)	14,696,958	14,658,998
Earnings per share (in dollars per share)	$ 0.45	$ 0.37
Diluted earnings per share [Abstract]
Income available to common stockholders	$ 6,550	$ 5,368
Weighted average common shares outstanding (in shares)	14,696,958	14,658,998
Add dilutive effects of potential additional common stock (in shares)	88,397	67,473
Weighted average common and dilutive potential common shares outstanding (in shares)	14,785,355	14,726,471
Earnings per share assuming dilution (in dollars per share)	$ 0.44	$ 0.36
Stock Options [Member]
Earnings Per Share [Abstract]
Securities not considered in computing diluted earnings per share (in shares)	0	72,075