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Earnings Per Share | 9 Months Ended
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Apr. 30, 2012
Earnings Per Share [Abstract] |
Earnings Per Share | (6) Earnings Per Share Our basic earnings per share ("EPS") is computed based on the weighted average number of shares, including fully-vested stock units, outstanding during each respective period. Our diluted EPS reflects the dilution from potential common stock issuable pursuant to the exercise of equity-classified stock-based awards and convertible senior notes, if dilutive, outstanding during each respective period. When calculating our diluted EPS, we consider (i) the amount an employee must pay upon assumed exercise of stock-based awards; (ii) the amount of stock-based compensation cost attributed to future services and not yet recognized; and (iii) the amount of excess tax benefits, if any, that would be credited to additional paid-in capital assuming exercise of in-the-money stock-based awards. This excess tax benefit is the amount resulting from a tax deduction for compensation in excess of compensation expense, based on the Black Scholes option pricing model, recognized for financial reporting purposes. Equity-classified stock-based awards to purchase 1,969,000 and 2,342,000 shares, for the three months ended April 30, 2012 and 2011, respectively, were not included in our diluted EPS calculation because their effect would have been anti-dilutive. Equity-classified stock-based awards to purchase 2,138,000 and 2,424,000 shares, for the nine months ended April 30, 2012 and 2011, respectively, were not included in our diluted EPS calculation because their effect would have been anti-dilutive. Liability-classified stock-based awards do not impact and are not included in the denominator for EPS calculations. In addition, the weighted-average basic and diluted shares outstanding for the three months ended April 30, 2012 and 2011 reflect a reduction of approximately 458,000 and 232,000 shares as a result of the repurchase of our common shares during the respective periods. The weighted-average basic and diluted shares outstanding for the nine months ended April 30, 2012 and 2011 reflect a reduction of approximately 3,579,000 and 1,086,000 shares as a result of the repurchase of our common shares during the respective periods. See Note (19) – "Stockholders' Equity" for more information on our stock repurchase program. The following table reconciles the numerators and denominators used in our basic and diluted EPS calculations:
|  | Three months ended April 30, |  | Nine months ended April 30,
|  | 2012 |  | 2011 |  | 2012 |  | 2011
Numerator: |  |  |  |  |  |  |  |
Net income for basic calculation |  | $ 6,066,000 |  | 14,255,000 |  | 24,488,000 |  | 56,007,000
Effect of dilutive securities: |  |  |  |  |  |  |  |
Interest expense (net of tax) on 3.0% convertible senior notes |  | 1,117,000 |  | 1,117,000 |  | 3,351,000 |  | 3,351,000
Numerator for diluted calculation |  | $ 7,183,000 |  | 15,372,000 |  | 27,839,000 |  | 59,358,000
Denominator: |  |  |  |  |  |  |  |
Denominator for basic calculation |  | 18,853,000 |  | 26,577,000 |  | 20,746,000 |  | 27,310,000
Effect of dilutive securities: |  |  |  |  |  |  |  |
Stock options |  | 263,000 |  | 210,000 |  | 236,000 |  | 219,000
Conversion of 3.0% convertible senior notes |  | 5,794,000 |  | 5,591,000 |  | 5,742,000 |  | 5,540,000
Denominator for diluted calculation |  | 24,910,000 |  | 32,378,000 |  | 26,724,000 |  | 33,069,000

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=16381557&loc=d3e4984-109258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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