XML 45 R42.htm IDEA: XBRL DOCUMENT v2.3.0.15
Stock-Based Compensation (Details) (Stock Option [Member])
3 Months Ended
Sep. 30, 2011
Year
Sep. 30, 2010
Year
Stock Option [Member]
  
Assumptions used in valuation of stock options  
Risk-free interest rate1.20%1.40%
Expected life (years)4.54.5
Expected volatility47.50%47.00%
Expected dividend yield1.50%2.00%