Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Fair Value Assumptions) (Details)

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Stock-Based Compensation (Fair Value Assumptions) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2011
Dec. 31, 2010
Jun. 30, 2011
Total cash received from employees for the issuance of shares under the ESPP $ 19,195 $ 16,176 $ 19,195 $ 16,176
ESPP maximum employee subscription rate 10.00% 10.00%
Share-based compensation arrangement, discount from market price, lesser of commencement of offering period or purchase date 85.00%
ESPP maximum annual share replenishment 2,000,000
ESPP share replenishment In period 0 0 2,000,000
Number of ESPP shares available for future issuance 2,900,000 2,900,000
ESPP祭期间,几个月 6
股份Compensation Arrangement, Fair Value Assumptions and Methodology [Abstract]
Expected stock price volatility 32.70% 41.00% 32.70% 41.00%
Risk-free interest rate 0.10% 0.20% 0.10% 0.20%
Dividend yield 3.40% 3.70% 3.40% 3.70%
Expected life of options (in years) 0.50 0.50 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 $ 368 $ 115 $ 843 $ 471
Weighted average fair value per share based on Black-Scholes model $ 9.16 $ 6.53 $ 9.16 $ 6.53
股份Compensation Arrangement by Share-based Payment Award, Shares Purchased for Award 545,000 701,000 545,000 701,000
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