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Significant Customers - Narrative (Details) $ in Millions	12 Months Ended
	Apr. 30, 2019 USD ($)
Revenue, Major Customer [Line Items]
Revenues	$ 2.9
Revenue
Revenue, Major Customer [Line Items]
Concentration risk percentage	10.70%

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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No definition available.

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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