Organization, Basis of Presentation, and Summary of Significant Accounting Policies - Assumptions Used in Discounted Cash Flow Models (Details) $ in Thousands	May 31, 2020 USD ($)
Accounting Policies [Abstract]
10% increase in revenue growth rates	$ 1,100
10% increase in expense growth rates	(800)
10% increase in income tax rates	(300)
10% increase in discount rates	$ (2,200)