Federal Income Taxes - Summary of Provision for Income Taxes (Details) - USD ($)	12 Months Ended
May 31, 2018	May 31, 2017
Income Tax Disclosure [Abstract]
Current income tax - Federal and State		$ 9,723
Deferred income tax provision	772,380	1,002,267
Provision for income taxes	$ 772,380	$ 1,011,990

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration