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Earnings (Loss) Per Share (Tables) | 3 Months Ended
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Feb. 28, 2014
Earnings Per Share, Basic and Diluted [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] | Basic and diluted earnings (loss) per share were calculated as follows (in thousands, except per share amounts):
| Three Months Ended February 28,
| 2014 |  | 2013
Numerator: |  |  |
Net income (loss) | $ | 10,563 |  |  | $ | (12,458 | )
Less: Distributed earnings allocated to nonvested restricted stock | (5 | ) |  | — |
Less: Undistributed earnings allocated to nonvested restricted stock | (22 | ) |  | — |
Numerator for basic earnings (loss) per share | 10,536 |  |  | (12,458 | )
Effect of dilutive securities: |  |  |
Interest expense and amortization of debt issuance costs associated with convertible senior notes, net of taxes | 667 |  |  | — |
Add: Undistributed earnings allocated to nonvested restricted stock | 22 |  |  | — |
Less: Undistributed earnings reallocated to nonvested restricted stock | (20 | ) |  | — |
Numerator for diluted earnings (loss) per share | $ | 11,205 |  |  | $ | (12,458 | )
Denominator: |  |  |
Weighted average shares outstanding — basic | 83,745 |  |  | 79,401 |
Effect of dilutive securities: |  |  |
Share-based payments | 1,799 |  |  | — |
Convertible senior notes | 8,402 |  |  | — |
Weighted average shares outstanding — diluted | 93,946 |  |  | 79,401 |
Basic earnings (loss) per share | $ | .13 |  |  | $ | (.16 | )
Diluted earnings (loss) per share | $ | .12 |  |  | $ | (.16 | )

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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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