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Stockholders' Equity - Common Stock - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
9 Months Ended 12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2020
Dec. 31, 2022
Sale Of Common Stock [Line Items]        
Common stock, shares issued 3,343,070     3,343,070
Options Granted [Member]        
Sale Of Common Stock [Line Items]        
Number of stock options granted 153,750 78,247    
ATM Sales Agreement [Member]        
Sale Of Common Stock [Line Items]        
Common stock, shares issued 0 621,697    
Proceeds from issuance of common stock   $ 7.3    
Common stock , weighted average price per share   $ 11.97    
ATM Sales Agreement [Member] | Maximum [Member]        
Sale Of Common Stock [Line Items]        
Potential proceeds from issuance of common stock, net     $ 30.0