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Employee Benefit Plans (Share-Based Compensation Expense) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Mar. 31, 2018 | Mar. 31, 2017 | Mar. 31, 2016
Share-based compensation expense and related tax benefit |  |  |
Total share-based compensation expense | $ 44,138 | $ 35,890 | $ 27,019
Income tax benefit | (15,998) | (8,536) | (6,297)
Total share-based compensation expense, net of income tax benefit | 28,140 | 27,354 | 20,722
Cost of goods sold |  |  |
Share-based compensation expense and related tax benefit |  |  |
Total share-based compensation expense | 3,733 | 2,663 | 2,340
Marketing and selling |  |  |
Share-based compensation expense and related tax benefit |  |  |
Total share-based compensation expense | 17,765 | 14,723 | 9,273
Research and development |  |  |
Share-based compensation expense and related tax benefit |  |  |
Total share-based compensation expense | 6,381 | 4,200 | 3,046
General and administrative |  |  |
Share-based compensation expense and related tax benefit |  |  |
Total share-based compensation expense | 16,259 | 14,304 | 12,353
Restructuring |  |  |
Share-based compensation expense and related tax benefit |  |  |
Total share-based compensation expense | $ 0 | $ 0 | $ 7

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition 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. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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