Quarterly report pursuant to Section 13 or 15(d)

Restructuring - Additional Information (Detail)

v2.4.0.8
Restructuring - Additional Information (Detail) (USD $)
3 Months Ended 9 Months Ended
May 31, 2013
May 31, 2012
May 31, 2013
May 31, 2012
Aug. 31, 2012
Restructuring and Related Activities [Abstract]          
Restructuring costs $ 1,500,000 $ 200,000 $ 2,000,000 $ 300,000  
Restructuring reserve 1,700,000   1,700,000   2,900,000
Proceeds from Divestiture of Businesses $ 0   $ 4,854,000 $ 0