Income Taxes (Details) - Schedule of Income before Income Tax, Domestic and Foreign - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2020	Apr. 30, 2019
Schedule of Income before Income Tax, Domestic and Foreign [Abstract]
U.S.	$ (11,768)	$ (4,713)
Foreign	0	2,240
	$ (11,768)	$ (2,473)