Share-Based Compensation Plans Share Based Compensation Expense in SG&A (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
Nov. 30, 2019	Nov. 30, 2018	Nov. 30, 2019	Nov. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation expense, net of income tax benefits	$ 4,415	$ 5,618	$ 17,309	$ 16,020
Share Based Compensation Effect on Earnings Per Share [Abstract]
Basic (in dollars per share)	$ 0.18	$ 0.22	$ 0.69	$ 0.61
Diluted (in dollars per share)	$ 0.17	$ 0.21	$ 0.68	$ 0.60
SG&A
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation expense	$ 4,758	$ 6,016	$ 18,743	$ 17,029
Less income tax benefits	(343)	(398)	(1,434)	(1,009)
Stock options \| SG&A
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation expense	21	128	172	655
Performance based and other stock awards \| SG&A
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation expense	4,138	5,419	17,366	15,337
Employee stock purchase plan \| SG&A
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation expense	459	329	784	651
Directors stock compensation \| SG&A
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation expense	$ 140	$ 140	$ 421	$ 386

no definition available.

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Represents the effect of share-based compensation expenses on the basic earnings per share during the reporting period.

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Represents the effect of share-based compensation expenses on the diluted earnings per share during the reporting period.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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