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Earnings Per Share (Tables) | 6 Months Ended
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Nov. 30, 2015
Earnings Per Share [Abstract] |
Reconciliation of Basic to Diluted Weighted-Average Shares Outstanding | The following table reconciles basic to diluted weighted-average shares outstanding for the three and six months ended November 30, 2015 and 2014 (in thousands):
| Three Months Ended |  | Six Months Ended
| Nov 30, 2015 |  | Nov 30, 2014 |  | Nov 30, 2015 |  | Nov 30, 2014
Basic | 36,140 |  |  | 35,595 |  |  | 36,051 |  |  | 35,475 |
Effect of dilutive securities | — |  |  | 532 |  |  | — |  |  | 537 |
Diluted | 36,140 |  |  | 36,127 |  |  | 36,051 |  |  | 36,012 |
Securities excluded as their inclusion would be anti-dilutive | 3,161 |  |  | 911 |  |  | 3,161 |  |  | 2,306 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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