Certificates of Deposit and Marketable Securities (Details) - USD ($)	Feb. 29, 2020	May 31, 2019
Assets measured at fair value, Total	$ 44,416	$ 527,232
Equity Securities
Assets measured at fair value, Total	44,416	35,232
Certificates of Deposit [Member]
Assets measured at fair value, Total		492,000
Level 1 [Member]
Assets measured at fair value, Total	44,416	35,232
Level 1 [Member] | Equity Securities
Assets measured at fair value, Total	44,416	35,232
Level 1 [Member] | Certificates of Deposit [Member]
Assets measured at fair value, Total
Level 2 [Member]
Assets measured at fair value, Total		492,000
Level 2 [Member] | Equity Securities
Assets measured at fair value, Total
Level 2 [Member] | Certificates of Deposit [Member]
Assets measured at fair value, Total		492,000
Level 3 [Member]
Assets measured at fair value, Total
Level 3 [Member] | Equity Securities
Assets measured at fair value, Total
Level 3 [Member] | Certificates of Deposit [Member]
Assets measured at fair value, Total