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v3.19.2

Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Apr. 30, 2019
Accounting Policies [Abstract] |
Schedule of Cash and Restricted Cash | Cash and restricted cash consists of the following (table in thousands):
| April 30, 2019 |  | April 30, 2018
Cash | $ | 3,237 |  |  | $ | 856 |
Restricted cash | — |  |  | 150 |
Total cash and restricted cash | $ | 3,237 |  |  | $ | 1,006 |

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- Definition Tabular disclosure of the components of cash and cash equivalents. + References No definition available. + Details
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