Quarterly Results (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Results (Unaudited) [Abstract]

Summary of quarterly results (unaudited)

Unaudited summarized results for each quarter of the last two years are as follows:

	2012 Quarters
	First			Second			Third			Fourth
Performance materials	$	125.2		$	131.1		$	121.0		$	114.6
Construction technologies		50.9			61.4			60.6			50.2
Energy services		55.3			61.1			69.1			71.8
Transportation		11.1			11.7			10.7			10.5
Intersegment sales		(7.1	)		(7.8	)		(7.9	)		(7.9	)
Net sales		235.4			257.5			253.5			239.2
Performance materials	$	33.4		$	35.6		$	31.2		$	26.7
Construction technologies		14.6			18.7			20.1			15.1
Energy services		15.4			19.2			17.7			18.8
Transportation		1.2			1.2			1.1			1.1
Intersegment gross profit		0.1			-			(0.3	)		0.2
Gross profit		64.7			74.7			69.8			61.9
Performance materials	$	21.5		$	22.5		$	18.0		$	14.3
Construction technologies		0.9			6.3			7.0			1.4
Energy services		4.8			7.7			7.9			8.3
Transportation		0.2			0.3			0.2			0.1
Corporate		(6.0	)		(5.7	)		(5.0	)		(6.6	)
Operating profit		21.4			31.1			28.1			17.5
Income (loss) from continuing operations	$	13.5		$	21.4		$	19.0		$	11.0
Income (loss) on discontinued operations	$	-		$	-		$	-		$	-
Net income (loss)	$	13.5		$	21.4		$	19.0		$	11.0
Net income (loss) attributable to noncontrolling interests	$	0.1		$	(0.3	)	$	-		$	-
Net income (loss) attributable to AMCOL shareholders	$	13.4		$	21.7		$	19.0		$	11.0
Basic earnings per share attributable to AMCOL shareholders (A)	$	0.42		$	0.68		$	0.59		$	0.34
Diluted earnings per share attributable to AMCOL shareholders (A)	$	0.41		$	0.67		$	0.59		$	0.34

(A) Earnings per share (EPS) for each quarter is computed using the weighted-average number of shares outstanding during the quarter, while EPS for the year is computed using the weighted-average number of shares outstanding during the year. Thus, the sum of the EPS for each of the four quarters may not equal the EPS for the year.

	2011 Quarters
	First			Second			Third			Fourth
Performance materials	$	115.8		$	118.3		$	122.2		$	120.4
Construction technologies		51.7			74.8			71.0			54.4
Energy services		45.6			45.1			50.1			53.9
Transportation		12.7			14.8			14.9			11.7
Intersegment sales		(7.2	)		(9.8	)		(10.3	)		(6.3	)
Net sales		218.6			243.2			247.9			234.1
Performance materials	$	28.1		$	26.2		$	31.5		$	30.7
Construction technologies		15.3			22.2			21.8			14.6
Energy services		13.5			11.7			15.4			15.4
Transportation		1.4			1.6			1.8			1.3
Intersegment gross profit		(0.4	)		0.1			(0.1	)		0.2
Gross profit		57.9			61.8			70.4			62.2
Performance materials	$	16.1		$	13.4		$	19.5		$	18.1
Construction technologies		1.8			8.0			7.0			0.5
Energy services		5.7			3.7			5.8			6.1
Transportation		0.5			0.7			0.7			0.3
Corporate		(5.1	)		(4.9	)		(7.2	)		(4.6	)
Operating profit		19.0			20.9			25.8			20.4
Income from continuing operations	$	13.2		$	12.9		$	20.8		$	12.8
Income (loss) on discontinued operations	$	(0.1	)	$	0.2		$	(1.3	)	$	-
Net income	$	13.1		$	13.1		$	19.5		$	12.8
Net income (loss) attributable to noncontrolling interests	$	-		$	-			-		$	-
Net income (loss) attributable to AMCOL shareholders	$	13.1		$	13.1		$	19.5		$	12.8
Basic earnings per share attributable to AMCOL shareholders (A)	$	0.42		$	0.41		$	0.61		$	0.40
Diluted earnings per share attributable to AMCOL shareholders (A)	$	0.41		$	0.41		$	0.61		$	0.40

(A) Earnings per share (EPS) for each quarter is computed using the weighted-average number of shares outstanding during the quarter, while EPS for the year is computed using the weighted-average number of shares outstanding during the year. Thus, the sum of the EPS for each of the four quarters may not equal the EPS for the year.