Related Party Transactions/Activity (Details Narrative) - USD ($)	9 Months Ended
Feb. 28, 2019	Feb. 28, 2018
Future minimum payments under operating lease 2020	$ 2,435,000
Future minimum payments under operating lease 2021	2,063,000
Net book value of production equipment	968,168	$ 3,000
Green Plastic Pallets [Member]
Pallet sales	167,400	330,144
Account receivable	19,440
Fiscal Year 2019 [Member]
Rent expense	36,000
Fiscal Year 2018 [Member]
Rent expense	36,000
Yorktown Management & Financial Services, LLC [Member]
Payments of rental fees	1,100,000	1,072,500
Rent expense	4,000
Future minimum payments under operating lease 2019	48,000
Future minimum payments under operating lease 2020	48,000
Future minimum payments under operating lease 2021	44,000
TriEnda Holdings, L.L.C [Member]
Material purchase amount	42,349	$ 123,072
Yorktown Grinding Equipment [Member]
Payments of rental fees	22,500
Yorktown's Pelletizing Equipment [Member]
Payments of rental fees	5,000
Yorktown Production Equipment [Member]
Payments of rental fees	7,695
Net book value of production equipment	$ 968,168
Lease term	4 years
Bargain purchase option amount	$ 10,000
Yorktown Production Equipment [Member] \| Initial Thirty Six Months [Member]
Payments of rental fees	$ 27,915

For an unclassified balance sheet, amount of receivables arising from transactions with related parties.

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