Nature of Operations, Corporate History, and Going Concern and Management Plans - Additional Information (Detail) $ / shares in Units, shares in Thousands, $ in Thousands		12 Months Ended
	Aug. 02, 2022 USD ($)	Jun. 30, 2022 USD ($) RegisteredDirectFinancings $ / shares shares	Jun. 30, 2021 USD ($) $ / shares shares	Aug. 19, 2020 $ / shares
Net loss		$ (22,661)	$ (38,298)
Common stock, par value | $ / shares		$ 0.001	$ 0.001	$ 0.0001
Conversion of convertible common stock		1.5740
Negative cash flow from operations		$ (20,392)	$ (18,860)
Cash and cash equivalents		11,780	10,537
Accumulated deficit		$ (136,356)	$ (111,225)
Number of registered direct financings completed | RegisteredDirectFinancings		2
Aggregate net proceeds from registered direct financing subsequent		$ 21,600
Common stock, shares issued | shares		65,533	32,740
Subsequent Event [Member]
Gross proceeds	$ 20,000