Calculation of Net (Loss) Income Used to Calculate Basic and Diluted (Loss) Per Share (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Potentially Dilutive Securities Outstanding [Line Items]
Net loss—basic	$ (41,314)	$ (47,173)	$ (16,819)
Change in fair value of warrant liability	(27,394)		(37,794)
Net loss—diluted	$ (68,708)	$ (47,173)	$ (54,613)