Segment Data (Tables)

12 Months Ended

Aug. 31, 2013

Segment Data

Summary of information about the Company's segments

	Years Ended August 31,
	2013			2012			2011
Revenues
Industrial Materials	$	163,474		$	95,988		$	75,744
Construction Materials		52,588			52,931			47,296
Total	$	216,062		$	148,919		$	123,040
Income before taxes
Industrial Materials	$	26,400		$	17,643		$	16,850
Construction Materials		6,463			4,913			4,452
Total for reportable segments		32,863			22,556			21,302
Corporate and common costs		(7,053	)		(8,560	)		(5,129	)
Total	$	25,810		$	13,996		$	16,173

Schedule of reconciliation of total assets from reportable segments to the consolidated balance sheets

	As of August 31,
	2013		2012
Total assets
Industrial Materials	$	133,110	$	135,322
Construction Materials		48,573		53,509
Total for reportable segments		181,683		188,831
Corporate and common assets		42,677		26,001
Total	$	224,360	$	214,832