XML 70 R68.htm IDEA: XBRL DOCUMENT v2.4.0.6
Share-Based Compensation - Weighted-average assumptions using Black-Scholes model (Details) (USD $)
12 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2010
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]      
Average fair value of options $ 4.42 $ 7.05 $ 6.09
Forfeiture rate 6.50% 6.50% 6.50%
Risk-free interest rate 1.10% 2.70% 2.60%
Dividend yield 0.00% 1.30% 2.50%
Average expected life 6 years 6 years 6 years
Expected stock price volatility 52.50% 54.70% 41.20%