|12 Months Ended|
Apr. 30, 2019
|Revenue from Contract with Customer [Abstract]|
|Schedule of Disaggregated 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