Quarterly report pursuant to Section 13 or 15(d)

Capital Stock and Share Repurchase (Detail)

v2.4.1.9
Capital Stock and Share Repurchase (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended
Nov. 30, 2014
Nov. 30, 2013
Earnings Per Share [Abstract]    
Earnings from continuing operations $ 24,674us-gaap_IncomeLossFromContinuingOperations $ 33,005us-gaap_IncomeLossFromContinuingOperations
Weighted average common shares outstanding - basic 64,357us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 73,085us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Net effect of dilutive securities—stock based compensation plans 1,242us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements 1,926us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Weighted average common shares outstanding - diluted 65,599us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 75,011us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Basic (in dollars per share) $ 0.38us-gaap_IncomeLossFromContinuingOperationsPerBasicShare $ 0.45us-gaap_IncomeLossFromContinuingOperationsPerBasicShare
Diluted (in dollars per share) $ 0.38us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare $ 0.44us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare
Anti-dilutive securities-stock based compensation plans (excluded from earnings per share calculation) 487us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 1us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount