Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Cash Flows From Operating Activities
Net loss	$ (3,321)	$ (3,505)	$ (6,536)	$ (6,037)
Adjustments to reconcile net loss to net cash used in operating activities:
Loss on investment in equity securities	70	0	75	0
Accretion on short-term investments			(62)	0
Depreciation and amortization			104	59
Stock-based compensation	673	426	1,333	841
Increase (decrease) in cash resulting from changes in:
Prepaid expenses and other assets			443	627
Accounts payable			26	677
Accrued expenses			(27)	277
Operating lease right-of-use assets and liabilities, net			13	0
Net cash used in operating activities			(4,631)	(3,556)
Cash Flows From Investing Activities
Purchases of fixed assets			(193)	(223)
Purchases of short-term investments			(9,893)	0
Purchases of equity securities			(1,061)	0
Sales of equity securities			368	0
Net cash used in investing activities			(10,779)	(223)
Cash Flows From Financing Activities
Proceeds from issuance of common stock, net			0	251
Employee taxes paid related to net share settlement of equity awards			0	(45)
Net cash provided by financing activities			0	206
Net decrease in cash, cash equivalents, and restricted cash			(15,410)	(3,573)
Cash, cash equivalents, and restricted cash at beginning of period	13,408	33,902	28,818	37,475
Cash, cash equivalents, and restricted cash at end of period	13,408	33,902	13,408	33,902
Reconciliation of cash, cash equivalents, and restricted cash to the condensed consolidated balance sheets
Cash and cash equivalents	13,265	33,791	13,265	33,791
Restricted cash	143	111	143	111
Cash, cash equivalents, and restricted cash at end of period	$ 13,408	$ 33,902	13,408	33,902
Supplemental Disclosure of Cash Flow Information:
Income taxes paid			$ (2)	$ 0