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Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share
Number of anti-dilutive shares excluded from the calculation	0	0
Net income	$ 5,569	$ 3,733
Weighted average number of shares	13,578	13,752
Effect of dilutive securities, restricted stock units and options	958	843
Weighted average diluted shares	14,536	14,595
Basic EPS	$ 0.41	$ 0.27
Diluted EPS	$ 0.38	$ 0.26

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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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