Consolidated Statement of Changes in Stockholders' (Deficit) Equity (Parenthetical) - $ / shares |
3 Months Ended | |
|---|---|---|
Aug. 31, 2020 |
Aug. 31, 2019 |
|
| Common Stock [Member] | ||
| Proceeds from registered direct offering, per share | $ 0.50 | $ 0.50 |
| Series B Preferred Stock [Member] | ||
| Dividend declared and paid on Series B Preferred shares | $ 0.25 | $ 0.25 |
| X | ||||||||||
- Definition Issuance Of Common Stock In Registered Direct Offering Per Share No definition available.
|
| X | ||||||||||
- Definition Aggregate dividends declared during the period for each share of common stock outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|