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Components of Basic and Diluted Earnings Per Share (Detail) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Numerator:
Net income attributable to AVD	$ 3,887	$ 3,106	$ 4,407	$ 7,012
Denominator:
Weighted average shares outstanding-basic	29,413	29,001	29,350	28,989
Dilutive effect of stock options and grants	441	539	554	571
Weighted average shares outstanding-diluted	29,854	29,540	29,904	29,560

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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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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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