EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
EARNINGS PER SHARE
Shares outstanding (weighted average) (in shares)	9,259,825	9,416,987
Shares held by Rabbi Trust (in shares)	95,027	99,029
Shares liability under deferred compensation agreement (in shares)	(95,027)	(99,029)
Basic earnings per share:
Net earnings applicable to common stockholders	$ 5,128	$ 5,823
Basic earnings per share (in shares)	9,259,825	9,416,987
Basic (in dollars per share)	$ 0.55	$ 0.62
Effect of dilutive securities:
Unvested stock awards (in shares)	44,792	43,131
Diluted earnings per share:
Net income applicable to common stockholders and assumed conversions	$ 5,128	$ 5,823
Diluted earnings per share (in shares)	9,304,617	9,460,118
Diluted earnings per share (in dollars per share)	$ 0.55	$ 0.62
Shares of common stock outstanding not included in the computation of diluted EPS (in shares)	38,390	0

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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