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Earnings Per Share (Tables) | 6 Months Ended
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May 31, 2017
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):
| Three Months Ended May 31, |  | Six Months Ended May 31,
| 2017 |  | 2016 |  | 2017 |  | 2016
Numerator: |  |  |  |  |  |  |
Net income | $ | 31,782 |  |  | $ | 15,597 |  |  | $ | 46,041 |  |  | $ | 28,724 |
Less: Distributed earnings allocated to nonvested restricted stock | (14 | ) |  | (10 | ) |  | (29 | ) |  | (21 | )
Less: Undistributed earnings allocated to nonvested restricted stock | (200 | ) |  | (66 | ) |  | (285 | ) |  | (116 | )
Numerator for basic earnings per share | 31,568 |  |  | 15,521 |  |  | 45,727 |  |  | 28,587 |
| Three Months Ended May 31, |  | Six Months Ended May 31,
| 2017 |  | 2016 |  | 2017 |  | 2016
Effect of dilutive securities: |  |  |  |  |  |  |
Interest expense and amortization of debt issuance costs associated with convertible senior notes, net of taxes | 664 |  |  | 667 |  |  | 1,327 |  |  | 1,333 |
Add: Undistributed earnings allocated to nonvested restricted stock | 200 |  |  | 66 |  |  | 285 |  |  | 116 |
Less: Undistributed earnings reallocated to nonvested restricted stock | (175 | ) |  | (59 | ) |  | (251 | ) |  | (104 | )
Numerator for diluted earnings per share | $ | 32,257 |  |  | $ | 16,195 |  |  | $ | 47,088 |  |  | $ | 29,932 |
Denominator: |  |  |  |  |  |  |
Weighted average shares outstanding — basic | 85,445 |  |  | 84,196 |  |  | 85,285 |  |  | 86,704 |
Effect of dilutive securities: |  |  |  |  |  |  |
Share-based payments | 3,885 |  |  | 2,122 |  |  | 3,288 |  |  | 1,954 |
Convertible senior notes | 8,402 |  |  | 8,402 |  |  | 8,402 |  |  | 8,402 |
Weighted average shares outstanding — diluted | 97,732 |  |  | 94,720 |  |  | 96,975 |  |  | 97,060 |
Basic earnings per share | $ | .37 |  |  | $ | .18 |  |  | $ | .54 |  |  | $ | .33 |
Diluted earnings per share | $ | .33 |  |  | $ | .17 |  |  | $ | .49 |  |  | $ | .31 |

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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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