Property and Equipment, Net of Accumulated Depreciation (Tables)
|3 Months Ended|
Aug. 31, 2017
|Property and Equipment, Net of Accumulated Depreciation [Abstract]|
|Components of Property and Equipment, at Cost||
Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.
Reference 1: http://www.xbrl.org/2003/role/presentationRef