Description of the Business, Basis of Presentation and Summary of Significant Accounting Policies (Details2)	12 Months Ended
	May 31, 2018
Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets	4 years
Prepublication Costs [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets	2 years
Prepublication Costs [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets	5 years
Customer Lists [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets	5 years
Customer Lists [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets	10 years
Intellectual Property [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets	5 years