Warrants - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2022 USD ($) $ / shares	Dec. 31, 2021 USD ($)	Dec. 19, 2018 $ / shares shares
Class Of Warrant Or Right [Line Items]
Change in fair value of common stock warrants	$ (30,000)	$ (508,000)
Expected Dividend Yield [Member]
Class Of Warrant Or Right [Line Items]
Measurement input	0
2018 PIPE Warrant Liability [Member]
Class Of Warrant Or Right [Line Items]
Number of common stock purchased upon issuance of warrants | shares			34,231
Exercise price of warrants (in dollars per share) | $ / shares			$ 30.00
Warrant issuance description	The 2018 PIPE Warrants were issued on December 19, 2018 in the 2018 PIPE Offering, pursuant to a Warrant Agreement with each of the investors in the 2018 PIPE Offering, and entitle the holders to purchase 34,231 shares of the Company’s common stock at an exercise price equal to $30.00 per share, subject to adjustment as discussed below, at any time commencing upon issuance of the 2018 PIPE Warrants and terminating on December 21, 2023.
Change in fair value of common stock warrants	$ (30,000)	(500,000)
Fair value of estimated warrants	$ 1,000	$ 31,000
2018 PIPE Warrant Liability [Member] | Minimum [Member]
Class Of Warrant Or Right [Line Items]
Exercise price of warrants (in dollars per share) | $ / shares	$ 30.00