Operating Lease Right-of-use (ROU) Assets and Operating Lease Liabilities - Schedule of Right-of-use Asset (Details) - USD ($)	Nov. 30, 2020	May 31, 2020
Leases [Abstract]
Operating leases	$ 1,575,265
Less accumulated reduction	(254,420)
Balance of ROU asset	$ 1,320,846	$ 490,984

Amount of lessee's right to use underlying asset under operating lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

Name:	us-gaap_OperatingLeaseRightOfUseAsset
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant