Quarterly report pursuant to Section 13 or 15(d)

Acquisitions - Proforma Results of Operations (Detail)

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Acquisitions - Proforma Results of Operations (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 9 Months Ended
May 31, 2014
May 31, 2013
May 31, 2014
May 31, 2013
Net sales        
Net sales, As reported $ 378,187 $ 344,205 $ 1,045,513 $ 952,482
Net sales, Pro forma 384,835 368,944 1,065,566 1,034,779
Earnings from continuing operations        
Earnings from continuing operations, As reported 50,557 46,077 105,866 102,462
Earnings from continuing operations, Pro Forma $ 50,931 $ 46,184 $ 106,647 $ 105,929
Basic earnings per share from continuing operations        
Basic earnings per share from continuing operations, As reported (in dollars per share) $ 0.72 $ 0.63 $ 1.47 $ 1.40
Basic earnings per share from continuing operations, Pro Forma (in dollars per share) $ 0.72 $ 0.63 $ 1.48 $ 1.45
Diluted earnings per share from continuing operations        
Diluted earnings per share from continuing operations, As reported (in dollars per share) $ 0.70 $ 0.62 $ 1.44 $ 1.38
Diluted earnings per share from continuing operations, Pro Forma (in dollars per share) $ 0.71 $ 0.62 $ 1.45 $ 1.42