Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
In-process research and development	$ 16,094
Property and equipment estimated useful life	three years
Series C Preferred Share Warrants [Member]
Anti-dilutive warrants, stock options, performance stock units, and convertible preferred shares related to outstanding	2,104	0
Series B Convertible Preferred Shares [Member]
Anti-dilutive warrants, stock options, performance stock units, and convertible preferred shares related to outstanding	150	162
Series C Convertible Preferred Shares [Member]
Anti-dilutive warrants, stock options, performance stock units, and convertible preferred shares related to outstanding	17,997	0
Stock options [Member]
Anti-dilutive warrants, stock options, performance stock units, and convertible preferred shares related to outstanding	6,453	779
Warrant [Member]
Anti-dilutive warrants, stock options, performance stock units, and convertible preferred shares related to outstanding	8,226	10,209