Earnings Per Share

6 Months Ended

Jun. 30, 2012

Earnings Per Share [Abstract]

EARNINGS PER SHARE

Note 3:        EARNINGS PER SHARE

The following table provides further share information used in computing our earnings per share for the periods presented herein. Basic earnings per share was computed by dividing net income attributable to AMCOL shareholders by the weighted average number of common shares outstanding during each period. Diluted earnings per share was computed by dividing net income attributable to AMCOL shareholders by the weighted average common shares outstanding after consideration of the dilutive effect of stock compensation awards outstanding during each period.

	Six Months Ended June 30,				Three Months Ended June 30,
	2012		2011		2012		2011
Weighted average number of common shares outstanding		32,005,514		31,611,265		32,035,503		31,706,082
Dilutive impact of stock based compensation		305,042		487,247		298,002		499,683
Weighted average number of common and common equivalent shares outstanding for the period		32,310,556		32,098,512		32,333,505		32,205,765
Number of common shares outstanding at the end of the period		31,920,554		31,645,359		31,920,554		31,645,359
Weighted average number of anti-dilutive shares excluded from the computation of diluted earnings per share		646,046		175,614		701,099		230,665