Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Revenue	$ 561	$ 130	$ 748	$ 270
Cost of revenue	441	128	616	241
Gross profit	120	2	132	29
Operating expenses:
Selling, general and administrative	1,728	803	3,154	1,729
Research and development	652	758	1,291	1,367
Disposal of corporate lease				544
Total operating expenses	2,380	1,561	4,445	3,640
Loss from operations	(2,260)	(1,559)	(4,313)	(3,611)
Other income and (expense), net	80	(63)	104	(122)
Loss from operations before income taxes	(2,180)	(1,622)	(4,209)	(3,733)
Income tax benefit	0	0	0	0
Net loss	$ (2,180)	$ (1,622)	$ (4,209)	$ (3,733)
Weighted average common shares outstanding:
Basic and diluted	47,482	15,864	47,455	11,769
Basic and diluted net loss per common share:
Net loss	$ (0.05)	$ (0.10)	$ (0.09)	$ (0.32)
Other comprehensive loss, net of tax:
Net loss	$ (2,180)	$ (1,622)	$ (4,209)	$ (3,733)
Available-for-sale securities:
Net unrealized loss	(197)		(245)
Total comprehensive loss	$ (2,377)	$ (1,622)	$ (4,454)	$ (3,733)