Stockholders' Equity - Schedule of Stock Warrant Activity (Details)	6 Months Ended
	Oct. 31, 2017 $ / shares shares
Equity [Abstract]
Number of Warrants Outstanding, Beginning of Period	452,359
Recapitalization	33,415
Number of Warrants, Granted
Number of Warrants, Exercised
Number of Warrants, Forfeited
Number of Warrants, Cancelled
Number of Warrants Outstanding, End of Period	485,774
Warrants exercisable at end of period	485,774
Warrants expected to vest
Weighted Average Exercise Price of Warrants Outstanding, Beginning of Period | $ / shares	$ 2.64
Weighted Average Exercise Price Recapitalization	32.61
Weighted Average Exercise Price, Granted | $ / shares
Weighted Average Exercise Price, Exercised | $ / shares
Weighted Average Exercise Price, Forfeited | $ / shares
Weighted Average Exercise Price, Cancelled | $ / shares
Weighted Average Exercise Price of Warrants Outstanding, End of Period | $ / shares	4.70
Weighted Average Exercise Price, exercisable at end of period | $ / shares	4.70
Weighted Average Exercise Price, expected to vest | $ / shares
Weighted average fair value of warrants granted during the period | $ / shares
Weighted Average Remaining Contractual Life in Years, Beginning of Period	4 years 2 months 23 days
Recapitalization	10 months 25 days
Weighted Average Remaining Contractual Life in Years, End of Period	3 years 6 months 18 days