Consolidated Statements of Operations and Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Revenue	$ 750	$ 869
Cost of revenue	444	677
Gross profit	306	192
Operating expenses:
Selling, general and administrative	5,775	6,006
Research and development	5,591	2,781
Total operating expenses	11,366	8,787
Loss from operations	(11,060)	(8,595)
Other income and expense, net	1,418	265
Loss from operations before income taxes	(9,642)	(8,330)
Income tax benefit	0	0
Net loss	$ (9,642)	$ (8,330)
Weighted average common shares outstanding:
Basic and diluted (in shares)	1,620	1,590
Basic and diluted net loss per common share:
Net loss per common share (in dollars per share)	$ (5.95)	$ (5.24)
Other comprehensive loss, net of tax:
Net loss	$ (9,642)	$ (8,330)
Available-for-sale securities:
Net unrealized loss	(254)	(1,176)
Total comprehensive loss	$ (9,896)	$ (9,506)