Share-Based Payments (Tables)

3 Months Ended

Sep. 30, 2012

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Table Text Block]

The table below indicates the key assumptions used in the option valuation calculations for options granted in the periods presented:

	Three Months Ended September 30,
	2012			2011
Term		7.3			6.6
Volatility		59.2	%		59.5	%
Dividend yield		0.0	%		0.0	%
Risk-free interest rate		1.2	%		1.5	%