Deferred Revenue, Net (Tables)
|3 Months Ended|
Aug. 31, 2019
|Revenue from Contract with Customer [Abstract]|
|Schedule of Deferred Revenue||
Deferred revenue, net consists of the following at August 31, 2019:
Tabular disclosure of contract balances and changes in contract balances.
Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef