Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Total
Balance at Jun. 30, 2019	$ 4	$ 128,651	$ (126,903)	$ 1,752
Balance (in shares) at Jun. 30, 2019	4,208
Issuance of common stock for cash: Related parties at $14.50 per share	$ 2	19,998	0	20,000
Issuance of common stock for cash: Related parties at $14.50 per share (in shares)	1,380
Issuance of common stock for cash: Other investors at $14.50 per share	$ 0	4,050	0	4,050
Issuance of common stock for cash: Other Investors at $14.50 per share (in shares)	279
Advisory fees and other offering costs related to issuance of Units	$ 0	(1,500)	0	(1,500)
Share-based compensation	0	3,317	0	3,317
Fair value of warrants issued to consultants for services	0	79	0	79
Net loss	0	0	(20,333)	(20,333)
Balance at Jun. 30, 2020	$ 6	154,595	(147,236)	7,365
Balance (in shares) at Jun. 30, 2020	5,867
Issuance of Units for cash in private placement	$ 2	40,998	0	41,000
Issuance of Units for cash in private placement (in shares)	2,485
Advisory fees and other offering costs related to issuance of Units	$ 0	(3,550)	0	(3,550)
Share-based compensation	0	3,965	0	3,965
Reclassification of warrants and stock options from equity to derivative liability due to authorized share deficiency	0	(3,591)	0	(3,591)
Reclassification of derivative liability to equity upon cure of authorized share deficiency	0	1,796	0	1,796
Fair value of warrants issued to consultants for services	0	8	0	8
Issuance of common stock for consulting services	0	8	0	8
Net loss	0	0	(20,902)	(20,902)
Balance at Jun. 30, 2021	$ 8	$ 194,229	$ (168,138)	$ 26,099
Balance (in shares) at Jun. 30, 2021	8,352