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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, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Numerator:
Net income attributable to AVD	$ 6,525	$ 4,089	$ 16,779	$ 11,845
Denominator:
Weighted average shares outstanding-basic	29,399	29,193	29,340	29,064
Dilutive effect of stock options and grants	810	590	806	584
Weighted average shares outstanding-assuming dilution	30,209	29,783	30,146	29,648

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

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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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