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EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
EARNINGS PER SHARE
Net income	$ 11,430	$ 11,028	$ 19,615	$ 18,505	$ 31,045	$ 29,533
Average number of basic common shares outstanding (in shares)	15,057,598	14,982,766			15,028,963	14,960,753
Plus: dilutive effect of stock options and awards outstanding (in shares)	55,757	67,990			71,317	73,829
Average number of diluted common shares outstanding (in shares)	15,113,355	15,050,756			15,100,280	15,034,582
Earnings per share:
Basic (in dollars per share)	$ 0.76	$ 0.74			$ 2.07	$ 1.97
Diluted (in dollars per share)	$ 0.76	$ 0.73			$ 2.06	$ 1.96

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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