Going Concern and Management's Plans - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		12 Months Ended
	May 31, 2023	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Cash And Cash Equivalents [Line Items]
Net loss		$ (8,356)	$ (5,724)
Accumulated deficit		(245,778)		$ (237,422)
Cash and cash equivalents		7,874		14,602
Net cash used in operating activities		(6,728)	$ (6,362)
Maximum [Member]
Cash And Cash Equivalents [Line Items]
Contingent receipt upon exerise of warrants and future performance of company		$ 50,000
Securities Purchase Agreement [Member] | Forecast [Member]
Cash And Cash Equivalents [Line Items]
Sale and issuance of warrants	$ 10,000
Underwritten Public Offering [Member] | Securities Purchase Agreement [Member]
Cash And Cash Equivalents [Line Items]
Proceeds from sale of common stock, net of costs				$ 60,000