Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Accounting Policies [Line Items]
Accrued expenses	$ 2,799,000	$ 4,196,000
Other	134,000	141,000
Cash and cash equivalents	$ 19,207,000	42,268,000
Description of reverse stock split	On December 1, 2022, the Company effected a 1-for-40 reverse stock split of its common stock (the “Reverse Stock Split”). As further described below, at a special meeting of stockholders held on November 30, 2022 (the “Special Meeting”), the stockholders of the Company approved a proposal to authorize the Company’s Board of Directors, in its discretion following the Special Meeting to amend the Company’s Amended and Restated Certificate of Incorporation, as amended (the “Certificate of Incorporation”), to effect a reverse stock split of all of the outstanding shares of the Company’s common stock, par value $0.01 per share, at a ratio ranging from any whole number between 1-for-2 and 1-for-40, as determined by the Company’s Board of Directors in its discretion. On November 30, 2022, following the Special Meeting, the Company’s Board of Directors approved the Reverse Stock Split at a ratio of 1-for-40. On December 1, 2022, the Company filed with the Secretary of State of the State of Delaware a certificate of amendment to amend the Company’s Certificate of Incorporation to effect the Reverse Stock Split. The Reverse Stock Split became effective at 5:00 p.m., Eastern Time, on December 1, 2022.
Impairment of long-lived assets	$ 0
Asset Impairment	0
Assets, transfer from level 2 to level 3	0	0
Liability for unrecognized tax benefits	0	0
Interest or penalties related to uncertain tax positions	$ 0	$ 0