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Warrants - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Feb. 17, 2023
Aug. 15, 2022
Jun. 30, 2023
Jun. 30, 2023
Dec. 31, 2022
Dec. 31, 2019
Dec. 31, 2016
Class of Warrant or Right [Line Items]              
Number of shares issued/sold 9,018,519            
Common stock, par value (in dollars per share) $ 0.001   $ 0.001 $ 0.001 $ 0.001    
Total proceeds from offering $ 12.0            
Issuance costs related to offering 1.1            
Other Expenses [Member]              
Class of Warrant or Right [Line Items]              
Issuance costs related to offering $ 0.7            
Common Stock [Member]              
Class of Warrant or Right [Line Items]              
Number of shares issuable for warrants outstanding (in shares)           11,365 10,579
Exercise price of warrants           $ 77.5 $ 77.5
Number of warrants outstanding     21,944 21,944      
Common Share and Common Stock Warrant [Member]              
Class of Warrant or Right [Line Items]              
Share price $ 1.08            
Pre-funded Warrant and Common Stock Warrant [Member]              
Class of Warrant or Right [Line Items]              
Share price 1.079            
Series A Warrant [Member] | Common Stock [Member]              
Class of Warrant or Right [Line Items]              
Number of shares issuable for warrants outstanding (in shares)   42,857          
Exercise price of warrants $ 0.54 $ 7.5          
Aggregate subscription amount   $ 0.3          
Warrants exercisable date   Feb. 15, 2023          
Warrants maturity term   Feb. 15, 2028          
Fair value of warrant liability   $ 0.4          
Pre-funded Warrants [Member]              
Class of Warrant or Right [Line Items]              
Number of shares issuable for warrants outstanding (in shares) 2,092,592            
Exercise price of warrants $ 0.001            
Share price     $ 0.001 $ 0.001      
Proceeds allocated to warrants $ 0.8            
Number of warrants exercised     351,852 351,852      
Number of warrants outstanding     0 0      
Common Stock Warrants [Member]              
Class of Warrant or Right [Line Items]              
Number of shares issuable for warrants outstanding (in shares) 22,222,222            
Exercise price of warrants $ 1.08            
Warrants exercisable date Mar. 15, 2023            
Warrants maturity term Feb. 17, 2028            
Fair value of warrant liability $ 7.6            
Number of warrants exercised     13,026,296 13,026,296      
Number of warrants outstanding     6,851,852 6,851,852      
Reduction of expense on change in fair value of warrants     $ 7.2 $ 5.9      
Common Stock Warrants [Member] | Common Stock [Member]              
Class of Warrant or Right [Line Items]              
Number of shares issuable for warrants outstanding (in shares)     6,513,148 6,513,148      
Number of securities called by each warrant 2            
Series A Redeemable Convertible Preferred Stock [Member]              
Class of Warrant or Right [Line Items]              
Series A redeemable convertible preferred stock, shares issued   3,000          
Series A redeemable convertible preferred stock, par value (in dollars per share)   $ 0.001