|3 Months Ended|
Jul. 31, 2020
|Revenue from Contract with Customer [Abstract]|
|Disaggregation of Revenue||The following table represents our revenues disaggregated by the nature and timing of services:
Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.
Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef