| Share-Based Compensation (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
| Mar. 31, 2014 | Mar. 31, 2013 | Mar. 31, 2014 | Mar. 31, 2013 | |
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
| Allocated Share-based Compensation Expense | $ 325 | $ 339 | $ 835 | $ 1,009 | 
| Research and Development Expense [Member] | ||||
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
| Allocated Share-based Compensation Expense | 55 | 75 | 93 | 178 | 
| General and Administrative Expense [Member] | ||||
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
| Allocated Share-based Compensation Expense | $ 270 | $ 264 | $ 742 | $ 831 |