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Convertible Notes (Detail) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 12 Months Ended 13 Months Ended
Aug. 26, 2021
Nov. 30, 2020
Jan. 31, 2020
Oct. 31, 2019
Dec. 31, 2022
Dec. 31, 2021
Oct. 31, 2020
May 31, 2021
Debt Disclosure [Abstract]                
Proceeds from issuance of convertible notes     $ 1.0 $ 8.1        
Convertible notes term   2 years         1 year  
Convertible notes interest rate for fourth month date of loan agreement     6.00% 6.00%        
Convertible notes interest rate for fifth and sixth month date of loan agreement     8.00% 8.00%        
Convertible notes interest rate for remaining sixth months term until maturity at twelve months     10.00% 10.00%        
Conversion into common stock, fixed conversion price per share (in dollars per share)               $ 4.80
Conversion notes converted into common stock (in shares) 698,018       698,018      
Convertible promissory notes $ 9.5              
Gain on conversion           $ 0.4