Income Taxes (Details) - Schedule of Components of Income Tax Expense (Benefit) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2021	Apr. 30, 2020
Schedule of Components of Income Tax Expense (Benefit) [Abstract]
Federal	$ (119)	$ (1,713)
State	(85)	(37)
Current (benefit) provision	(204)	(1,750)
Federal	0	9
State	0	(1)
Deferred tax (benefit) provision	0	8
Total (benefit) provision	$ (204)	$ (1,742)