Consolidated Statement of Changes in Shareholders' Equity (Deficit) - USD ($) |
Total |
Private Equity Offering One |
Private Equity Offering Two |
Conversion Features One |
Conversion Features Two |
Conversion Features three |
Exercise Price 1 |
Exercise Price 2 |
Conversion Features Four |
Conversion Features Five |
Conversion Features Six |
Conversion Features Seven |
Preferred Stock |
Common Stock |
Common Stock
Private Equity Offering One
|
Common Stock
Private Equity Offering Two
|
Common Stock
Conversion Features One
|
Common Stock
Conversion Features Two
|
Common Stock
Conversion Features three
|
Common Stock
Exercise Price 1
|
Common Stock
Exercise Price 2
|
Common Stock
Conversion Features Four
|
Common Stock
Conversion Features Five
|
Common Stock
Conversion Features Seven
|
Additional Paid-in Capital |
Additional Paid-in Capital
Private Equity Offering One
|
Additional Paid-in Capital
Private Equity Offering Two
|
Additional Paid-in Capital
Conversion Features One
|
Additional Paid-in Capital
Conversion Features Two
|
Additional Paid-in Capital
Conversion Features three
|
Additional Paid-in Capital
Exercise Price 1
|
Additional Paid-in Capital
Exercise Price 2
|
Additional Paid-in Capital
Conversion Features Four
|
Additional Paid-in Capital
Conversion Features Five
|
Additional Paid-in Capital
Conversion Features Six
|
Additional Paid-in Capital
Conversion Features Seven
|
Rescission Amount |
Accumulated Deficit |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Beginning balance at May. 31, 2014 | $ 3,922,232 | $ 95 | $ 55,753 | $ 50,678,616 | $ (378,000) | $ (46,434,232) | ||||||||||||||||||||||||||||||||
Beginning balance, shares at May. 31, 2014 | 95,100 | 55,753,311 | ||||||||||||||||||||||||||||||||||||
Rescission expirations and exclusions | 378,000 | $ 378,000 | ||||||||||||||||||||||||||||||||||||
Amortization of deferred offering costs related to rescission liability | (68,292) | (68,292) | ||||||||||||||||||||||||||||||||||||
Common shares issued to extinguish promissory notes payable, convertible debt and related interest, shares | 104,153 | 5,628,330 | 119,580 | |||||||||||||||||||||||||||||||||||
OID, intrinsic value related to warrants | 2,505,261 | 2,505,261 | ||||||||||||||||||||||||||||||||||||
Common shares issued to extinguish promissory notes payable, convertible debt and related interest, value | $ 52,077 | $ 4,221,250 | $ 86,296 | $ 104 | $ 5,628 | $ 120 | $ 51,973 | $ 4,215,622 | $ 86,176 | |||||||||||||||||||||||||||||
Exercise of common stock warrants, shares | 1,938,974 | 100,000 | ||||||||||||||||||||||||||||||||||||
Exercise of common stock warrants, Value | $ 1,066,435 | $ 75,000 | $ 1,939 | $ 100 | $ 1,064,496 | $ 74,900 | ||||||||||||||||||||||||||||||||
Stock-based compensation | 631,302 | 631,302 | ||||||||||||||||||||||||||||||||||||
Inducement interest on note conversions and warrant exercises | 555,626 | 555,626 | ||||||||||||||||||||||||||||||||||||
Inducement interest on reissued warrants | 970,367 | 970,367 | ||||||||||||||||||||||||||||||||||||
Net (loss) at year ended | (25,088,070) | (25,088,070) | ||||||||||||||||||||||||||||||||||||
Ending balance at May. 31, 2015 | (10,692,516) | $ 95 | $ 63,644 | 60,766,047 | (71,522,302) | |||||||||||||||||||||||||||||||||
Ending balance, shares at May. 31, 2015 | 95,100 | 63,644,348 | ||||||||||||||||||||||||||||||||||||
Debt discount due to reduction in note conversion price from ($0.75 to $0.675/share) | 329,524 | 329,524 | ||||||||||||||||||||||||||||||||||||
Common shares issued to extinguish promissory notes payable, convertible debt and related interest, shares | 4,095,008 | 792,201 | ||||||||||||||||||||||||||||||||||||
Common shares issued to extinguish promissory notes payable, convertible debt and related interest, value | $ 2,764,154 | $ 594,152 | $ 4,095 | $ 792 | $ 2,760,059 | $ 593,360 | ||||||||||||||||||||||||||||||||
Conversion of convertible debt and extinguishment of derivative liability, Value | $ 4,732,514 | $ 5,275 | $ 4,727,239 | |||||||||||||||||||||||||||||||||||
Conversion of convertible debt and extinguishment of derivative liability, shares | $ 5,274,656 | |||||||||||||||||||||||||||||||||||||
Exercise of common stock warrants (cashless), shares | 74,490 | |||||||||||||||||||||||||||||||||||||
Exercise of common stock warrants (cashless), value | $ 74 | (74) | ||||||||||||||||||||||||||||||||||||
Exercise of common stock warrants, shares | 192,307 | 603,286 | ||||||||||||||||||||||||||||||||||||
Exercise of common stock warrants, Value | $ 96,154 | $ 452,465 | $ 192 | $ 604 | $ 95,962 | $ 451,861 | ||||||||||||||||||||||||||||||||
Stock-based compensation | 2,353,194 | 2,353,194 | ||||||||||||||||||||||||||||||||||||
Proceeds from private equity offering, shares | 44,357,838 | 4,301,500 | ||||||||||||||||||||||||||||||||||||
Inducement interest on reissued warrants | $ 757,871 | $ 757,871 | ||||||||||||||||||||||||||||||||||||
Proceeds from private equity offering, value | $ 33,268,464 | $ 4,301,500 | $ 44,358 | $ 4,302 | $ 33,224,106 | $ 4,297,198 | ||||||||||||||||||||||||||||||||
Deferred offering costs | (3,915,127) | (3,915,127) | ||||||||||||||||||||||||||||||||||||
Modification of warrants related to conversion inducement | $ 866,713 | $ 866,713 | ||||||||||||||||||||||||||||||||||||
Net (loss) at year ended | (25,703,612) | (25,703,612) | ||||||||||||||||||||||||||||||||||||
Ending balance at May. 31, 2016 | $ 10,205,450 | $ 95 | $ 123,336 | $ 107,307,933 | $ (97,225,914) | |||||||||||||||||||||||||||||||||
Ending balance, shares at May. 31, 2016 | 95,100 | 123,335,634 |