Share-Based Compensation (Details) - USD ($) $ in Thousands  | 
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2017  | 
Mar. 31, 2016  | 
Mar. 31, 2017  | 
Mar. 31, 2016  | 
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| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
| Allocated Share-based Compensation Expense | $ 207 | $ 297 | $ 713 | $ 940 | 
| Research and Development Expense [Member] | ||||
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
| Allocated Share-based Compensation Expense | 5 | 6 | 16 | 15 | 
| General and Administrative Expense [Member] | ||||
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
| Allocated Share-based Compensation Expense | $ 202 | $ 291 | $ 697 | $ 925 | 
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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