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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, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Numerator:
Net income attributable to AVD	$ 5,144	$ 3,887	$ 8,215	$ 4,407
Denominator:
Weighted average shares outstanding-basic	29,930	29,413	29,834	29,350
Dilutive effect of stock options and grants	569	441	677	554
Weighted average shares outstanding-diluted	30,499	29,854	30,511	29,904

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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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