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Nature of Business and Basis of Presentation - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2022
Sep. 30, 2021
Oct. 18, 2022
Dec. 31, 2021
Schedule Of Nature Of Business And Basis Of Presentation [Line Items]                    
Common stock, par value $ 0.0001           $ 0.0001     $ 0.0001
Net loss $ 5,775 $ 5,044 $ 6,662 $ 10,185 $ 10,499 $ 10,282 $ 17,481 $ 30,966    
Net cash used in operating activities             20,100 13,834    
Cash and cash equivalents $ 30,780     $ 59,581     $ 30,780 $ 59,581   $ 53,480
Merger Agreement [Member] | Subsequent Event [Member]                    
Schedule Of Nature Of Business And Basis Of Presentation [Line Items]                    
Common stock, par value                 $ 0.0001  
Sale of stock, price per share                 $ 2.07