Summary of Significant Accounting Policies (Tables)

12 Months Ended

Apr. 30, 2017

Accounting Policies [Abstract]

Public Utility Property, Plant, and Equipment

Property and equipment consisted of the following (in thousands):

	April 30,
	2017			2016
Furniture and fixtures	$	74		$	73
Computer equipment and software	872			715
Laboratory equipment	918			782
Assets in progress	472			—
Leasehold improvements	2			2
Total property and equipment	2,338			1,572
Less: Accumulated depreciation and amortization	(1,122		)	(954		)
Property and equipment, net	$	1,216		$	618

Schedule of Future Minimum Lease Payments for Capital Leases

The following is a schedule by years of future minimum lease payments under this capital lease together with the present value of the net minimum lease payments as of April 30, 2017 (table in thousands):

For the Years Ended April 30,	2018	$	25
	2019	27
	2020	16
Total minimum lease payments		68
Less: amount representing interest		(5		)
Present value of minimum payments		63
Less: current portion		(25		)
		$	38

Schedule of Earnings Per Share, Basic and Diluted

	Year Ended April 30,
	2017			2016
Basic and diluted net loss per share computation
Net loss attributable to common stockholders	$	(6,883,882	)	$	(10,445,537	)
Weighted Average common shares	10,684,395			8,695,199
Basic and diluted net loss per share	$	(0.64	)	$	(1.20	)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following table reflects the total potential stock-based instruments outstanding at April 30, 2017 and 2016 that could have an effect on the future computation of dilution per common share:

	Year Ended April 30
	2017	2016
Stock options	2,308,704	2,212,757
Warrants	2,004,284	2,109,840
Total common stock equivalents	4,312,988	4,322,597