Earnings (Loss) Per Share - Computations of Basic and Diluted Earnings (Loss) Per Share (Details) - USD ($)	3 Months Ended		6 Months Ended
	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2018	Oct. 31, 2017	[1]
Net earnings (loss)	$ 30,151,246	$ (2,736,557)	$ 30,059,995	$ (3,377,383)	[2]
Weighted average basic shares	67,146,971	58,212,889	66,854,138	48,324,000	[2]
Weighted average diluted shares	392,505,479	58,212,889	291,913,008	48,324,000	[2]
Basic	$ 0.45	$ (0.05)	$ 0.45	$ (0.07)	[2]
Diluted	$ 0.08	$ (0.05)	$ 0.10	$ (0.07)	[2]
Convertible Notes [Member]
Weighted average diluted shares	210,959,331		112,199,041
Convertible Preferred Stock [Member]
Weighted average diluted shares	106,997,040		105,641,442
Stock Options and Warrants [Member]
Weighted average diluted shares	7,402,137		7,218,387

[1] Represents data for the period from May 5, 2017 (inception) to October 31, 2017.

[2] Represents results of operations for the period from May 5, 2017 (inception) to October 31, 2017.