Schedule of (Loss) Per Share, Basic and Diluted (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Net loss - basic	$ (5,766)	$ (11,454)	$ (17,646)	$ (13,546)
Change in fair value of warrant liability	(5,458)	(7,083)	(8,046)	(20,307)
Net loss - diluted	$ (11,224)	$ (18,537)	$ (25,692)	$ (33,853)