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Capital Stock and Stock-Based Awards (Details) - Schedule of RSU activity - Restricted Stock Units (RSUs) [Member] - $ / shares | 12 Months Ended
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May 31, 2017 | May 31, 2016 | May 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Granted (Shares) | 52,331 | 74,536 | 66,146
Weighted average grant date price per unit (in Dollars per share) | $ 39.22 | $ 43.10 | $ 33.80

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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + 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 (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + 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 weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Details
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