XML 13 R25.htm IDEA: XBRL DOCUMENT v2.4.1.9
Reconciliation of Net Income and Share Amounts in Computation of Basic and Diluted Net Earnings Per Common Share (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Earnings Per Share [Abstract]    
Net income $ 23,204us-gaap_NetIncomeLoss $ 18,712us-gaap_NetIncomeLoss
Earnings per share:    
Basic $ 0.31us-gaap_EarningsPerShareBasic $ 0.25us-gaap_EarningsPerShareBasic
Effect of CESs   $ (0.01)manh_AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnitsPerShare
Diluted $ 0.31us-gaap_EarningsPerShareDiluted $ 0.24us-gaap_EarningsPerShareDiluted
Weighted average number of shares:    
Basic 73,979us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 75,817us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Effect of CESs 628us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements 978us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Diluted 74,607us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 76,795us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding