Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Revenue	$ 130	$ 205	$ 270	$ 206
Cost of revenue	128	196	241	196
Gross profit	2	9	29	10
Operating expenses:
Selling, general and administrative	803	1,110	1,729	2,312
Research and development	758	939	1,367	1,794
Disposal of corporate lease			544
Total operating expenses	1,561	2,049	3,640	4,106
Loss from operations	(1,559)	(2,040)	(3,611)	(4,096)
Interest and other expense, net	(63)	(43)	(122)	(55)
Loss from operations before income taxes	(1,622)	(2,083)	(3,733)	(4,151)
Income tax benefit	0	0	0	0
Net loss	$ (1,622)	$ (2,083)	$ (3,733)	$ (4,151)
Weighted average common shares outstanding:
Basic and diluted	15,864	5,947	11,769	5,769
Basic and diluted net loss per common share:
Net loss	$ (0.10)	$ (0.35)	$ (0.32)	$ (0.72)
Total comprehensive loss	$ (1,622)	$ (2,083)	$ (3,733)	$ (4,151)