Acquisitions - Summary of Preliminary Acquisition Consideration and the Related Fair Values of Assets Acquired and Liabilities Assumed (Details) - Crisp Media, Inc $ in Thousands	May 31, 2017 USD ($)
Business Acquisition [Line Items]
Purchase Consideration	$ 51,904
Net Tangible Assets Acquired/ (Liabilities Assumed)	5,893
Identifiable Intangible Assets	9,400
Goodwill	$ 36,611
Goodwill Deductible for Taxes	Not Deductible
Acquisition Related Expenses	$ 1,504