Equipment and Leasehold Improvements, Net (Details) - USD ($) $ in Thousands |
Dec. 31, 2019 |
Jun. 30, 2019 |
|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Property and Equipment, gross | $ 4,353 | $ 4,342 |
| Accumulated depreciation | (3,629) | (3,550) |
| Property and Equipment, net | 724 | 792 |
| Equipment [Member] | ||
| Property, Plant and Equipment [Line Items] | ||
| Property and Equipment, gross | 2,558 | 2,558 |
| Computer equipment and software [Member] | ||
| Property, Plant and Equipment [Line Items] | ||
| Property and Equipment, gross | 1,051 | 1,050 |
| Office equipment and furniture [Member] | ||
| Property, Plant and Equipment [Line Items] | ||
| Property and Equipment, gross | 205 | 205 |
| Leasehold Improvements [Member] | ||
| Property, Plant and Equipment [Line Items] | ||
| Property and Equipment, gross | 446 | 446 |
| Project In Progress [Member] | ||
| Property, Plant and Equipment [Line Items] | ||
| Property and Equipment, gross | $ 93 | $ 83 |