Summary of Significant Accounting Policies (Tables)

12 Months Ended

Apr. 30, 2018

Accounting Policies [Abstract]

Public Utility Property, Plant, and Equipment

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

	April 30,
	2018			2017
Furniture and fixtures	$	73		$	74
Computer equipment and software	973			872
Laboratory equipment	2,490			918
Assets in progress	15			472
Leasehold improvements	—			2
Total property and equipment	3,551			2,338
Less: Accumulated depreciation and amortization	(1,468		)	(1,122		)
Property and equipment, net	$	2,083		$	1,216

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, 2018 (table in thousands):

For the Years Ended April 30,	2019	$	28
	2020	16
Total minimum lease payments		44
Less: amount representing interest		(2		)
Present value of minimum payments		42
Less: current portion		(26		)
		$	16

Schedule of Earnings Per Share, Basic and Diluted

	Year Ended April 30,
	2018			2017
Basic and diluted net loss per share computation (dollars in thousands except per share amounts)
Net loss attributable to common stockholders	$	(1,476	)	$	(6,884	)
Weighted Average common shares	10,991,105			10,684,395
Basic and diluted net loss per share	$	(0.13	)	$	(0.64	)

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, 2018 and 2017 that could have an effect on the future computation of dilution per common share:

	Year Ended April 30
	2018	2017
Stock options	2,705,845	2,308,704
Warrants	2,004,284	2,004,284
Total common stock equivalents	4,710,129	4,312,988