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Stock-Based Compensation (Tables) | 9 Months Ended
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Apr. 30, 2012
Stock-Based Compensation [Abstract] |
Stock-based compensation for awards detailing where recorded in Condensed Consolidated Statement of Operations |
|  | Three months ended April 30, |  | Nine months ended April 30,
|  | 2012 |  | 2011 |  | 2012 |  | 2011
Cost of sales |  | $ 46,000 |  | 88,000 |  | 224,000 |  | 361,000
Selling, general and administrative expenses |  | 626,000 |  | 824,000 |  | 2,066,000 |  | 2,875,000
Research and development expenses |  | 137,000 |  | 206,000 |  | 428,000 |  | 741,000
Stock-based compensation expense before income tax benefit |  | 809,000 |  | 1,118,000 |  | 2,718,000 |  | 3,977,000
Income tax benefit |  | (308,000) |  | (399,000) |  | (1,009,000) |  | (1,430,000)
Net stock-based compensation expense |  | $ 501,000 |  | 719,000 |  | 1,709,000 |  | 2,547,000
Certain weighted average assumptions used to estimate initial fair value of stock-based awards |
|  | Three months ended April 30, |  | Nine months ended April 30,
|  | 2012 |  | 2011 |  | 2012 |  | 2011
Expected dividend yield |  | 3.49% |  | 3.59% |  | 3.97% |  | 3.59%
Expected volatility |  | 36.00% |  | 38.00% |  | 36.19% |  | 38.00%
Risk-free interest rate |  | 0.85% |  | 2.30% |  | 0.83% |  | 2.24%
Expected life (years) |  | 5.19 |  | 5.28 |  | 5.23 |  | 5.27
Actual income tax benefit recognized for tax deductions relating to the exercise of stock-based awards |
|  | Nine months ended April 30,
|  | 2012 |  | 2011
Actual income tax benefit recorded for the tax deductions relating to the exercise of stock-based awards |  | $ 341,000 |  | 291,000
Less: Tax benefit initially recognized on exercised stock-based awards vesting subsequent to the adoption of accounting standards that require us to expense stock-based awards, excluding income tax shortfalls of $192,000 and $0 during the nine months ended April 30, 2012 and 2011, respectively |  | (197,000) |  | (137,000)
Excess income tax benefit recorded as an increase to additional paid-in capital |  | 144,000 |  | 154,000
Less: Tax benefit initially disclosed but not previously recognized on exercised equity-classified stock-based awards vesting prior to the adoption of accounting standards that require us to expense stock-based awards |  | (2,000) |  | -
Excess income tax benefit from exercised equity-classified stock-based awards reported as a cash flow from financing activities in our Condensed Consolidated Statements of Cash Flows |  | $ 142,000 |  | 154,000

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- Definition Actual income tax benefit recognized for tax deductions relating to the exercise of stock-based awards. + References No definition available. + Details
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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph g(1) -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -Subparagraph b -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 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=6793087&loc=d3e301413-122809 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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