Goodwill And Intangible Assets (Schedule Of Estimated Amortization Expense) (Details) $ in Thousands	Jan. 31, 2016 USD ($)
Finite-Lived Intangible Assets [Line Items]
2016	$ 38,042
2017	33,172
2018	25,931
2019	17,902
2020	15,440
Capitalized software and development costs
Finite-Lived Intangible Assets [Line Items]
2016	16,115
2017	13,187
2018	9,098
2019	5,609
2020	3,570
Other intangible assets
Finite-Lived Intangible Assets [Line Items]
2016	21,927
2017	19,985
2018	16,833
2019	12,293
2020	$ 11,870