XML 59 R49.htm IDEA: XBRL DOCUMENT v3.24.1
Summary of Significant Accounting Policies - Amounts Recognized in Consolidated Statements of Operations and Comprehensive Loss Net (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Total stock-based compensation $ 717 $ 1,106
Research and Development [Member]    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Total stock-based compensation 3 75
Selling, General and Administrative [Member]    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Total stock-based compensation $ 714 $ 1,031