Federal Income Taxes - Summary of Net Change in Deferred Taxes (Details) - USD ($)	12 Months Ended
	May 31, 2019	May 31, 2018
Income Tax Disclosure [Abstract]
Valuation allowance	$ (2,978,511)
Net operating loss carryforward	2,792,000	(87,308)
Depreciation and amortization, tax reporting in excess of financial	(242,240)	(664,475)
Allowance for doubtful accounts		(8,788)
Accrued expenses	(13,022)	(11,701)
Other	6,096	(108)
Net change	$ (435,677)	$ (772,380)