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Stock-Based Compensation (Fair Value Assumptions) (Details) (USD $) In Thousands, except Share data in Millions, unless otherwise specified |
3 Months Ended | ||
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Sep. 30, 2011 |
Sep. 30, 2010 |
Jun. 30, 2011 |
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| ESPP maximum employee subscription rate | 10.00% | ||
| Share-based compensation arrangement, discount from market price, lesser at offering period or purchase date | 85.00% | ||
| ESPP maximum annual share replenishment | 2.0 | ||
| ESPP share replenishment In period | 2.0 | ||
| Number of ESPP shares available for future issuance | 3.5 | ||
| ESPP祭期间,几个月 | 6 | ||
| Share-based Compensation Arrangement, Fair Value Assumptions and Methodology [Abstract] | |||
| 预期股票价格波动 | 33.00% | 41.00% | |
| Risk-free interest rate | 0.10% | 0.20% | |
| Dividend yield | 3.40% | 3.70% | |
| Expected life of options (in years) | 0.50 | 0.50 | |
| Employee Stock Purchase Plan Additional Information [Abstract] | |||
| Tax benefits realized in connection with the disqualifying dispositions of shares purchased under the ESPP | $ 475 | $ 356 | |
| Weighted average fair value per share based on Black-Scholes model | $ 9.16 | $ 6.53 | |
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- Definition
Employee Stock Purchase Plan Additional Information [Abstract]
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- Definition
Espp Maximum Annual Share Replenishment
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- Definition
Espp Share Replenishment In Period
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- Definition
Number Of Espp Shares Available For Future Issuance
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- Definition
Stock Based Compensation Offering Period In Months
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- Definition
Tax Benefits Realized From Espp
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- Definition
Weighted Average Fair Value Per Share
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- Definition
The discount rate from market value on offering date that participants pay for shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The period of time an equity-based award is expected to be outstanding. An equity-based award's expected term is generally determined based on, among other factors, the instrument's contractual term and the effects of employees' expected exercise and post-vesting employment termination behavior. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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