Stockholders' Equity - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended	9 Months Ended
	Dec. 31, 2021	Sep. 30, 2020	Dec. 31, 2021	Mar. 31, 2022	Mar. 31, 2021	Jun. 30, 2021	Nov. 10, 2020
Class of Stock [Line Items]
Fair value of warrants				$ 1,536,000		$ 22,355,000
Payments of Stock Issuance Costs				3,672,000	$ 64,000
Common stock Value Issued	$ 48,653,000	$ 3,136,000
Unsold Securities Shares and Warrants Under Agreement				107,500,000
Aggregate Value of Securities Available Under Agreement				$ 123,400,000
Warrant [Member]
Class of Stock [Line Items]
Exercise price				$ 2.54
Warrants outstanding				16,058,985
Underwritten Registered Offering
Class of Stock [Line Items]
Common stock share issued			20,125,000,000
Shares Issued, Price Per Share	$ 2.60		$ 2.60
Proceeds from Issuance Initial Public Offering			$ 48,700,000
Payments of Stock Issuance Costs			3,700,000
GrossProceedsFromIssuance ofCommonStock			$ 52,300,000
ATM Sales Agreement
Class of Stock [Line Items]
Common stock share issued					958,083,000
Common stock Value Issued					$ 3,100,000
Aggregate Value of Securities Available Under Agreement					100,000
GrossProceedsFromIssuance ofCommonStock					$ 3,200
Two Thousand And Twenty At The Market Sale Agreement
Class of Stock [Line Items]
Aggregate value of securities available under shelf registration statement				$ 60,000,000.0
Maximum
Class of Stock [Line Items]
Sale of shares and warrants under agreement				200,000,000.0
Maximum | Two Thousand And Twenty At The Market Sale Agreement
Class of Stock [Line Items]
Sale of shares under agreement				$ 60,000,000.0			$ 60,000,000.0