Share-Based Payments (Tables)

3 Months Ended

Mar. 31, 2013

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 March 31,						Nine Months Ended March 31,
	2013			2012			2013			2012
Term		7.3 Years			6.6 Years			7.3 Years			6.6 Years
Volatility		59.2	%		59.5	%		59.2	%		59.5	%
Dividend yield		—			—			—			—
Risk-free interest rate		1.4	%		1.5	%		1.2	%		1.5	%
Risk-free interest rate								1.4	%