Quarterly report pursuant to Section 13 or 15(d)

Note 13 - Fair Value of Financial Instruments (Details) - Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation

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Note 13 - Fair Value of Financial Instruments (Details) - Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation
9 Months Ended
Feb. 28, 2018
USD ($)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]  
Balance as of May 31, 2017 $ 95,276
Issuances 3,091,039
Conversions/Redemptions (2,238,003)
Revaluation loss 25,863
Balance as of February 28, 2018 $ 974,175