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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, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Numerator:
Net income attributable to AVD	$ 3,106	$ 5,599	$ 7,012	$ 10,254
Denominator:
Weighted average shares outstanding-basic	29,001	29,330	28,989	29,309
Dilutive effect of stock options and grants	539	860	571	804
Weighted average shares outstanding-diluted	29,540	30,190	29,560	30,113

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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