Quarterly report pursuant to Section 13 or 15(d)

Assumptions Used to Measure Fair Value of Stock Options (Detail)

v2.4.0.6
Assumptions Used to Measure Fair Value of Stock Options (Detail)
6 Months Ended
Dec. 31, 2012
Share based Compensation Arrangement by Share based Payment Award, Fair Value Assumptions, Method Used [Line Items]  
Forfeiture rate 5.00%
Risk free interest rate, minimum 0.80%
Risk free interest rate, maximum 3.00%
Expected volatility 100.00%
Expected dividend yield 0.00%
Minimum [Member]
 
Share based Compensation Arrangement by Share based Payment Award, Fair Value Assumptions, Method Used [Line Items]  
Expected life (years) 5 years
Maximum [Member]
 
Share based Compensation Arrangement by Share based Payment Award, Fair Value Assumptions, Method Used [Line Items]  
Expected life (years) 10 years