EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share [Abstract]
Net income	$ 7,721	$ 7,281
Average number of basic common shares outstanding (in shares)	15,558,132	15,523,423
Plus: dilutive effect of stock options and awards outstanding (in shares)	34,463	63,226
Average number of diluted common shares outstanding (in shares)	15,592,595	15,586,649
Anti-dilutive options excluded from earnings calculation (in shares)	0	0
Earnings per share:
Basic (in dollars per share)	$ 0.50	$ 0.47
Diluted (in dollars per share)	$ 0.50	$ 0.47