Leases - Schedule of Future Minimum Lease Payments (Details) - USD ($)	May 31, 2020	May 31, 2019
Leases [Abstract]
Year ended May 31, 2021	$ 81,881
Year ended May 31, 2022	61,881
Year ended May 31, 2023	33,881
Year ended May 31, 2024	18,557
Year ended May 31, 2025	1,291
Total lease payments	197,491
Less: Imputed interest	(14,966)
Present value of minimum lease payments	182,525	$ 180,794
Year ended May 31, 2021	2,203,790
Year ended May 31, 2022	2,102,690
Year ended May 31, 2023	1,670,293
Year ended May 31, 2024	98,231
Year ended May 31, 2025	11,704
Total lease payments	6,086,708
Less: Imputed interest	(631,052)
Present value of minimum lease payments	$ 5,455,656	$ 6,754,819