Stockholders' Equity (Details 3) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
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| Stock-based compensation | $ 7,240 | $ 5,491 |
| Research and Development [Member] | ||
| Stock-based compensation | 4,182 | 2,424 |
| General and Administrative [Member] | ||
| Stock-based compensation | $ 3,058 | $ 3,067 |
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- Definition Amount of noncash expense for share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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