CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Shares	Additional paid in capital	Accumulated Deficit
Beginning Balance at Jun. 30, 2020	$ 77,061	$ 111,514	$ 355,452	$ (278,391)
Net income (loss)	712			712
Issuance of common stock, net	3,136	958	3,136
Exercise of stock options	124	50	124
Share-based compensation expense	2,942		2,942
Ending Balance at Sep. 30, 2020	83,975	112,522	361,654	(277,679)
Beginning Balance at Jun. 30, 2020	77,061	111,514	355,452	(278,391)
Net income (loss)	(32,936)
Ending Balance at Mar. 31, 2021	55,728	112,592	367,055	(311,327)
Beginning Balance at Sep. 30, 2020	83,975	112,522	361,654	(277,679)
Net income (loss)	(8,026)			(8,026)
Exercise of stock options	15	6	15
Share-based compensation expense	2,609		2,609
Ending Balance at Dec. 31, 2020	78,573	112,528	364,278	(285,705)
Net income (loss)	(25,622)			(25,622)
Exercise of stock options	126	63	126
Exercise of warrants	6	1	6
Share-based compensation expense	2,645		2,645
Ending Balance at Mar. 31, 2021	55,728	112,592	367,055	(311,327)
Beginning Balance at Jun. 30, 2021	49,466	112,615	369,171	(319,705)
Net income (loss)	(17,510)			(17,510)
Issuance of common stock for vested restricted stock units	(194)	63	(194)
Share-based compensation expense	2,539		2,539
Ending Balance at Sep. 30, 2021	34,301	112,678	371,516	(337,215)
Beginning Balance at Jun. 30, 2021	49,466	112,615	369,171	(319,705)
Net income (loss)	(38,391)
Ending Balance at Mar. 31, 2022	67,806	133,152	425,902	(358,096)
Beginning Balance at Sep. 30, 2021	34,301	112,678	371,516	(337,215)
Net income (loss)	(12,156)			(12,156)
Issuance of common stock, net	48,653	20,125	48,653
Exercise of stock options	212	102	212
Share-based compensation expense	2,324		2,324
Ending Balance at Dec. 31, 2021	73,334	132,905	422,705	(349,371)
Net income (loss)	(8,725)			(8,725)
Exercise of stock options	360	247	360
Share-based compensation expense	2,837		2,837
Ending Balance at Mar. 31, 2022	$ 67,806	$ 133,152	$ 425,902	$ (358,096)