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Components of Basic and Diluted Earnings Per Share (Detail) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Numerator:
Net income attributable to AVD	$ 5,498	$ 2,927	$ 13,713	$ 7,334
Denominator:
Weighted average shares outstanding-basic	29,892	29,501	29,854	29,401
Dilutive effect of stock options and grants	498	472	616	525
Weighted average shares outstanding-diluted	30,390	29,973	30,470	29,926

X

- Definition

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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