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Acquisition and Disposition (Details Narrative) - USD ($)			12 Months Ended
	Oct. 13, 2017	May 23, 2017	Apr. 30, 2019	Apr. 30, 2018
Common stock, par value			$ 0.001	$ 0.001
Preferred stock, shares designated			50,000,000	50,000,000
Preferred stock, par value			$ 0.001	$ 0.001
Impairment expense				$ 6,094,760
Net proceeds from sales of common stock			219,796	2,590,004
Gain on extinguishment of liabilities				248,684
Gain from sale of discontinued operations				94,485
Gold King [Member]
Common stock shares outstanding			1,204,667
Acquisition consideration fair value per share			$ 4.70
Quoted trading price on the date of the merger			$ 5,661,935
Goodwill			6,094,760
Dataram Memory [Member]
Purchase price	$ 900,000
Net proceeds from sales of common stock				326,404
Financing Agreement [Member] \| Rosenthal & Rosenthal, Inc [Member]
Revolving line of credit maximum borrowing capacity			$ 3,500,000
Financing Agreement [Member] \| Rosenthal & Rosenthal, Inc [Member] \| Prime Rate [Member]
Line of credit interest rate, percentage			3.25%
Financing Agreement [Member] \| Rosenthal & Rosenthal, Inc [Member] \| Effective Rate [Member]
Line of credit interest rate, percentage			3.00%
Financing Agreement [Member] \| Dataram Memory [Member] \| Rosenthal & Rosenthal, Inc [Member]
Liabilities related to agreement				$ 0
Series C Preferred Stock [Member]
Conversion of stock shares converted				45,002
Number of shares issued for conversion				4,500,180
Series C Preferred Stock [Member] \| Escrow Agreement [Member]
Number of shares held for escrow		4,500.01
Gold King [Member]
Number of common shares issued for acquisition		2,446,433
Common stock, par value		$ 0.001
Gold King [Member] \| Series C Preferred Stock [Member]
Number of common shares issued for acquisition		4,523,589
Number of common stock options issued in connection with acquisition		231,458
Gold King [Member] \| Series C Preferred Stock [Member] \| Maximum [Member]
Number of warrants issued to purchase common stock		452,359
Copper King [Member] \| Series C Convertible Preferred Stock [Member]
Preferred stock, shares designated		45,000.18
Preferred stock, par value		$ 0.001
Copper King [Member] \| Series C Preferred Stock [Member]
Conversion of stock shares converted		4,500,180
Number of shares issued for conversion		45,500.18