CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIT)) - USD ($) |
Common Stock [Member]
Oasis Acquisition [Member]
|
Common Stock [Member]
Cashless Exercise Of Warrants [Member]
|
Common Stock [Member]
Warrant issued to Consultants [Member]
|
Common Stock [Member]
Issued to Officers [Member]
|
Common Stock [Member]
Common stock issued for exercise of special warrants [Member]
|
Common Stock [Member] |
Additional Paid-in Capital [Member]
Oasis Acquisition [Member]
|
Additional Paid-in Capital [Member]
Special Warrants Issued for Cash [Member]
|
Additional Paid-in Capital [Member]
Cashless Exercise Of Warrants [Member]
|
Additional Paid-in Capital [Member]
Warrant Issued Due to Penalty [Member]
|
Additional Paid-in Capital [Member]
Warrants Issued as Compensation for Offering [Member]
|
Additional Paid-in Capital [Member]
Warrants issued to Placement Agent [Member]
|
Additional Paid-in Capital [Member]
Special Warrant Issued Due to Penalty [Member]
|
Additional Paid-in Capital [Member]
Warrant issued to Consultants [Member]
|
Additional Paid-in Capital [Member]
Issued to Officers [Member]
|
Additional Paid-in Capital [Member]
Common stock issued for exercise of special warrants [Member]
|
Additional Paid-in Capital [Member] |
Stock Payable [Member]
Warrant issued to Consultants [Member]
|
Stock Payable [Member]
Issued to Officers [Member]
|
Stock Payable [Member]
To Be Issued to Officers [Member]
|
Stock Payable [Member] |
Retained Earnings [Member] |
Oasis Acquisition [Member] |
Special Warrants Issued for Cash [Member] |
Warrant Issued Due to Penalty [Member] |
Warrants Issued as Compensation for Offering [Member] |
Warrants issued to Placement Agent [Member] |
Special Warrant Issued Due to Penalty [Member] |
Issued to Officers [Member] |
To Be Issued to Officers [Member] |
Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Balance at May. 31, 2018 | $ 5,013 | $ 17,628,717 | $ 307,584 | $ (18,569,094) | $ (627,780) | ||||||||||||||||||||||||||
| Balance (in Shares) at May. 31, 2018 | 50,128,972 | ||||||||||||||||||||||||||||||
| Common stock issued for conversion of debt | $ 370 | 1,295,320 | 1,295,690 | ||||||||||||||||||||||||||||
| Common stock issued for conversion of debt, Shares (in Shares) | 3,697,511 | ||||||||||||||||||||||||||||||
| Common stock issued in connection with Oasis acquisition | $ 2,206 | $ 15,438,970 | $ 15,441,176 | 25,313 | |||||||||||||||||||||||||||
| Common stock issued in connection with Oasis acquisition (in Shares) | 22,058,823 | ||||||||||||||||||||||||||||||
| Stock issued for services | $ 73 | 515,240 | (25,313) | 490,000 | |||||||||||||||||||||||||||
| Stock issued for services, Shares (in Shares) | 731,250 | ||||||||||||||||||||||||||||||
| Common stock issued | $ 62 | $ 5 | $ 281,438 | 47,495 | $ (230,820) | $ 403,644 | $ 50,680 | $ 403,644 | 47,500 | ||||||||||||||||||||||
| Common stock issued (in Shares) | 625,000 | 50,000 | |||||||||||||||||||||||||||||
| Foreign currency transaction loss on equity offering | 403,588 | 403,588 | |||||||||||||||||||||||||||||
| Discount on notes payable and accrued interest | 5,888,707 | 5,888,707 | |||||||||||||||||||||||||||||
| Reclasification of deritivate upon adoption of ASU 2017-11 | Accounting Standards Update 2017-11 [Member] | 1,265,751 | 1,265,751 | |||||||||||||||||||||||||||||
| Reclasification of deritivate upon adoption of ASU 2017-11 | 1,265,751 | ||||||||||||||||||||||||||||||
| Derivative valuation of reset event | 35,883 | 35,883 | |||||||||||||||||||||||||||||
| Imputed interest | 807 | 807 | |||||||||||||||||||||||||||||
| Net loss | (27,619,057) | (27,619,057) | |||||||||||||||||||||||||||||
| Common stock issued for cash | $ 1,438 | 5,748,562 | 5,750,000 | ||||||||||||||||||||||||||||
| Common stock issued for cash (in Shares) | 14,375,000 | ||||||||||||||||||||||||||||||
| Warrants issued | $ 9,785,978 | $ 941,972 | $ 2,369,830 | $ 1,413,300 | $ 7,142,550 | $ 9,785,978 | $ 941,972 | $ 2,369,830 | $ 1,413,300 | $ 7,142,550 | |||||||||||||||||||||
| Common stock issued for exercise of special warrants | $ 3,347 | $ (3,347) | |||||||||||||||||||||||||||||
| Common stock issued for exercise of special warrants (in Shares) | 33,463,838 | ||||||||||||||||||||||||||||||
| Units issued as compensation for offering | $ 56 | 557,279 | 557,335 | ||||||||||||||||||||||||||||
| Units issued as compensation for offering (in Shares) | 559,750 | ||||||||||||||||||||||||||||||
| Cashless exercise of warrant | $ 15 | $ (15) | |||||||||||||||||||||||||||||
| Cashless exercise of warrant (in Shares) | 148,951 | ||||||||||||||||||||||||||||||
| Balance at May. 31, 2019 | $ 12,585 | 70,758,025 | 455,095 | (46,188,151) | 25,037,554 | ||||||||||||||||||||||||||
| Balance (in Shares) at May. 31, 2019 | 125,839,095 | ||||||||||||||||||||||||||||||
| Common stock issued for conversion of debt | $ 3 | 25,854 | 25,857 | ||||||||||||||||||||||||||||
| Common stock issued for conversion of debt, Shares (in Shares) | 32,321 | ||||||||||||||||||||||||||||||
| Common stock issued in connection with Oasis acquisition | 0 | ||||||||||||||||||||||||||||||
| Stock issued for services | $ 10 | $ 10 | $ 22,490 | 22,490 | $ (22,500) | 45,000 | 45,000 | ||||||||||||||||||||||||
| Stock issued for services, Shares (in Shares) | 100,000 | ||||||||||||||||||||||||||||||
| Common stock issued | $ 55 | $ 390,445 | $ (390,500) | 154,014 | 154,014 | ||||||||||||||||||||||||||
| Common stock issued (in Shares) | 550,000 | ||||||||||||||||||||||||||||||
| Reclasification of deritivate upon adoption of ASU 2017-11 | 0 | ||||||||||||||||||||||||||||||
| Net loss | (30,657,973) | (30,657,973) | |||||||||||||||||||||||||||||
| Balance at May. 31, 2020 | $ 12,653 | $ 71,196,814 | $ 241,109 | $ (76,846,124) | $ (5,395,548) | ||||||||||||||||||||||||||
| Balance (in Shares) at May. 31, 2020 | 126,521,416 |