Related Party Transactions/Activity (Details Narrative) - USD ($)	6 Months Ended
Nov. 30, 2020	Nov. 30, 2019
Non-Cancelable Operating Lease [Member]
Related Party Transaction [Line Items]
Future minimum payments under operating lease 2021	$ 48,000
Future minimum payments under operating lease 2022	4,000
Office Space [Member]
Related Party Transaction [Line Items]
Payments of rental fees	$ 24,000	$ 24,000
Lease term	60 months
Monthly [Member] \| Office Space [Member]
Related Party Transaction [Line Items]
Payments of rental fees	$ 4,000
Lease term	5 years
Yorktown's Grinding and Pelletizing Equipment [Member]
Related Party Transaction [Line Items]
Payments of rental fees	$ 715,000	715,000
Yorktown's Grinding and Pelletizing Equipment [Member] \| Weekly [Member]
Related Party Transaction [Line Items]
Payments of rental fees	27,500
TriEnda Holdings, L.L.C [Member]
Related Party Transaction [Line Items]
Related party transaction purchases	52,356	5,400
Accounts payable	40,800
Green Plastic Pallets [Member]
Related Party Transaction [Line Items]
Revenue from goods	236,250	$ 271,320
Account receivable	$ 129,150

Amount for accounts payable to related parties.

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