Supplemental Financial Information (Tables)

12 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Schedule of quarterly financial information

Quarterly Results of Operations (Unaudited)

 (in thousands, except share and per share amounts)

	Three Months Ended												Total
	June 30, 2018			September 30, 2018			December 31, 2018			March 31, 2019			Fiscal Year 2019
Operating expenses:
Research and development	$	2,744		$	5,261		$	5,335		$	3,758		$	17,098
General and administrative		1,466			2,171			1,857			1,964			7,458
Total operating expenses		4,210			7,432			7,192			5,722			24,556
Loss from operations		(4,210	)		(7,432	)		(7,192	)		(5,722	)		(24,556	)
Other expenses, net:
Interest expense, net		(2	)		(3	)		(2	)		(1	)		(8	)
Loss on extinguishment of accounts payable		—			—			(23	)		—			(23	)
Loss before income taxes		(4,212	)		(7,435	)		(7,217	)		(5,723	)		(24,587	)
Income taxes		(2	)		—			—			—			(2	)
Net loss and comprehensive loss		(4,214	)		(7,435	)		(7,217	)		(5,723	)		(24,589	)
Accrued dividend on Series B Preferred stock		(274	)		(284	)		(291	)		(291	)		(1,140	)
Net loss attributable to common stockholders	$	(4,488	)	$	(7,719	)	$	(7,508	)	$	(6,014	)	$	(25,729	)
Basic and diluted net loss per common share
attributable to common stockholders	$	(0.20	)	$	(0.30	)	$	(0.24	)	$	(0.17	)	$	(0.90	)
Weighted average shares used in computing:
Basic and diluted net loss per common share
attributable to common stockholders		22,987,066			25,815,245			30,696,312			35,113,753			28,562,490

	Three Months Ended												Total
	June 30, 2017			September 30, 2017			December 31, 2017			March 31, 2018			Fiscal Year 2018
Operating expenses:
Research and development	$	1,096		$	2,427		$	1,602		$	2,638		$	7,763
General and administrative		1,164			2,567			1,266			1,440			6,437
Total operating expenses		2,260			4,994			2,868			4,078			14,200
Loss from operations		(2,260	)		(4,994	)		(2,868	)		(4,078	)		(14,200	)
Other expenses, net:
Interest expense, net		(3	)		(3	)		(2	)		(1	)		(9	)
Loss on extinguishment of accounts payable		—			—			(135	)		—			(135	)
Loss before income taxes		(2,263	)		(4,997	)		(3,005	)		(4,079	)		(14,344	)
Income taxes		(2	)		—			—			—			(2	)
Net loss and comprehensive loss		(2,265	)		(4,997	)		(3,005	)		(4,079	)		(14,346	)
Accrued dividend on Series B Preferred stock		(247	)		(257	)		(263	)		(263	)		(1,030	)
Deemed dividend from trigger of down round
provision feature		—			—			(199	)		—			(199	)
Net loss attributable to common stockholders	$	(2,512	)	$	(5,254	)	$	(3,467	)	$	(4,342	)	$	(15,575	)
Basic and diluted net loss per common share
attributable to common stockholders	$	(0.28	)	$	(0.53	)	$	(0.25	)	$	(0.19	)	$	(1.12	)
Weighted average shares used in computing:
Basic and diluted net loss per common share
attributable to common stockholders		9,034,213			9,892,016			13,895,642			22,880,968			13,890,041