Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands |
3 Months Ended | ||
|---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Jun. 30, 2018 |
|
| Summary Of Significant Accounting Policies [Line Items] | |||
| Revenues From Grants | $ 0 | $ 44,000 | |
| Work in process | $ 0 | $ 0 | |
| Intellectual Property [Member] | Minimum [Member] | |||
| Summary Of Significant Accounting Policies [Line Items] | |||
| Finite-Lived Intangible Assets, Remaining Amortization Period | 16 years | ||
| Intellectual Property [Member] | Maximum [Member] | |||
| Summary Of Significant Accounting Policies [Line Items] | |||
| Finite-Lived Intangible Assets, Remaining Amortization Period | 23 years | ||