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Earnings Per Share (Tables) | 6 Months Ended
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May 31, 2016
Earnings Per Share, Basic and Diluted [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | Basic and diluted earnings per share were calculated as follows (in thousands, except per share amounts):
| Six Months Ended May 31, |  | Three Months Ended May 31,
| 2016 |  | 2015 |  | 2016 |  | 2015
Numerator: |  |  |  |  |  |  |
Net income | $ | 28,724 |  |  | $ | 17,372 |  |  | $ | 15,597 |  |  | $ | 9,573 |
Less: Distributed earnings allocated to nonvested restricted stock | (21 | ) |  | (16 | ) |  | (10 | ) |  | (8 | )
Less: Undistributed earnings allocated to nonvested restricted stock | (116 | ) |  | (45 | ) |  | (66 | ) |  | (24 | )
Numerator for basic earnings per share | 28,587 |  |  | 17,311 |  |  | 15,521 |  |  | 9,541 |
| Six Months Ended May 31, |  | Three Months Ended May 31,
| 2016 |  | 2015 |  | 2016 |  | 2015
Effect of dilutive securities: |  |  |  |  |  |  |
Interest expense and amortization of debt issuance costs associated with convertible senior notes, net of taxes | $ | 1,333 |  |  | $ | 1,333 |  |  | $ | 667 |  |  | $ | 667 |
Add: Undistributed earnings allocated to nonvested restricted stock | 116 |  |  | 45 |  |  | 66 |  |  | 24 |
Less: Undistributed earnings reallocated to nonvested restricted stock | (104 | ) |  | (41 | ) |  | (59 | ) |  | (22 | )
Numerator for diluted earnings per share | $ | 29,932 |  |  | $ | 18,648 |  |  | $ | 16,195 |  |  | $ | 10,210 |
Denominator: |  |  |  |  |  |  |
Weighted average shares outstanding — basic | 86,704 |  |  | 91,974 |  |  | 84,196 |  |  | 91,995 |
Effect of dilutive securities: |  |  |  |  |  |  |
Share-based payments | 1,954 |  |  | 1,094 |  |  | 2,122 |  |  | 1,147 |
Convertible senior notes | 8,402 |  |  | 8,402 |  |  | 8,402 |  |  | 8,402 |
Weighted average shares outstanding — diluted | 97,060 |  |  | 101,470 |  |  | 94,720 |  |  | 101,544 |
Basic earnings per share | $ | .33 |  |  | $ | .19 |  |  | $ | .18 |  |  | $ | .10 |
Diluted earnings per share | $ | .31 |  |  | $ | .18 |  |  | $ | .17 |  |  | $ | .10 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + 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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