Quarterly report pursuant to Section 13 or 15(d)

Organization and Description of Business - Additional Information (Detail)

Organization and Description of Business - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands							3 Months Ended
	Mar. 02, 2023	Dec. 15, 2022	Aug. 15, 2022	Jul. 29, 2022	Mar. 22, 2021	May 27, 2020	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Organization And Description Of Business [Line Items]
Accumulated deficit							$ 327,076		$ 325,705
Net cash used in operating activities							(8,798)	$ (11,767)
Number of shares issued						147,471
Cash Cash Equivalents And Marketable Securities							$ 13,900
Restructuring charge			$ 7,700	$ 7,700
Labor and Related Expense			1,600	1,600
Write-off of prepaid manufacturing costs			$ 6,100	$ 6,100
Common Stock [Member]
Organization And Description Of Business [Line Items]
Number of shares issued	128,000	54,375
Class of warrant or right, issued	5,000,000
Sale of stock, price per share	$ 4
Prefunded Warrants [Member]
Organization And Description Of Business [Line Items]
Class of warrant or right, issued	2,372,000	623,919
Follow-on Offering [Member]
Organization And Description Of Business [Line Items]
Exercise Price of Warrants or Rights						$ 392
Public offering price, per unit						$ 356
Stock issued during period, value					$ 150,000
Over-Allotment Option [Member]
Organization And Description Of Business [Line Items]
Number of shares issued					143,750
Public offering price, per unit					$ 400
Proceeds from initial public offer					$ 53,800
Sale of stock, price per share					$ 400
Pre Funded Warrants and Common Stock [Member]
Organization And Description Of Business [Line Items]
Proceeds from issuance or sale of equity	$ 9,100	$ 6,100
Class A warrants [Member] \| Common Stock [Member]
Organization And Description Of Business [Line Items]
Class of warrant or right, issued		1,356,589
Class B warrants [Member] \| Common Stock [Member]
Organization And Description Of Business [Line Items]
Class of warrant or right, issued		678,294
Class A warrant and Class B warrant [Member]
Organization And Description Of Business [Line Items]
Sale of stock, price per share		$ 10.32
Two Thousand and Twenty Three Offering [Member]
Organization And Description Of Business [Line Items]
Exercise Price of Warrants or Rights	$ 4
Number of common stock Called by each warrant or right	2
Two Thousand and Twenty Three Offering [Member] \| Prefunded Warrants [Member]
Organization And Description Of Business [Line Items]
Number of common stock Called by each warrant or right	1
Two Thousand And Twenty Two Offering [Member]
Organization And Description Of Business [Line Items]
Exercise Price of Warrants or Rights	$ 4	10.32
Sale of stock, price per share		$ 10.32
Proceeds from issuance or sale of equity	$ 9,100
Number of common stock Called by each warrant or right	2
Two Thousand And Twenty Two Offering [Member] \| Prefunded Warrants [Member]
Organization And Description Of Business [Line Items]
Number of common stock Called by each warrant or right	1
Two Thousand And Twenty Two Offering [Member] \| ClassA Warrant [Member]
Organization And Description Of Business [Line Items]
Number of common stock Called by each warrant or right		1
Two Thousand And Twenty Two Offering [Member] \| ClassB Warrant [Member]
Organization And Description Of Business [Line Items]
Number of common stock Called by each warrant or right		2