Acquisition and Disposition - Schedule of Selected Financial Data of Company's Gain from Sale (Details) - USD ($)	12 Months Ended
Apr. 30, 2019	Apr. 30, 2018
Net gain from sale of Dataram Memory business		$ 94,485
Dataram Memory [Member]
Total consideration		900,000
Direct legal and sales commission expenses related to the sale		(201,510)
Dataram's accrued expenses to be deducted from the sales proceeds		(174,880)
Total carrying value of Dataram Memory business on date of sale		(429,125)
Net gain from sale of Dataram Memory business		94,485
Current assets		3,271,426
Other assets		33,320
Current liabilities		(2,866,660)
Liabilities - long term		(8,961)
Total carrying value of Dataram Memory business on date of sale		$ 429,125

Total carrying value of Dataram Memory business on date of sale.

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Estimated Dataram's accrued expenses to be deducted from the sales proceeds.

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Total carrying value of Dataram Memory business on date of sale.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of other assets expected to be realized or consumed before one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

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