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Components of Basic and Diluted Earnings Per Share (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Numerator:
Net income attributable to American Vanguard	$ 2,159	$ 16,915
Denominator:
Weighted averages shares outstanding-basic	28,401	28,269
Dilutive effect of stock options and grants	487	610
Weighted average shares outstanding - assuming dilution	28,888	28,879

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- 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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