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Stockholders' Equity - At-the-Market Offering Agreement (Detail) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Mar. 15, 2024
Stockholder's Equity          
Proceeds from sale of common stock   $ 12,703,000   $ 15,051,000  
Proceeds from sale of common stock from sales through Common Stock Purchase Agreement     $ 12,838,000 $ 15,051,000  
At The Market Offering Agreement          
Stockholder's Equity          
Maximum Value of Shares Authorized Under the Agreement         $ 100,000,000
Proceeds from sale of common stock (in shares) 11,294,746   30,718,121    
Proceeds from sale of common stock $ 11,998,000   $ 38,831,000    
Proceeds after sales commissions $ 12,000,000.0   $ 38,800,000    
Per Share Weighted Average Price of Shares Issued $ 1.09   $ 1.30    
Proceeds from sale of common stock from sales through Common Stock Purchase Agreement $ 12,300,000   $ 39,800,000    
Sales agent commissions 300,000   1,000,000.0    
Remaining value of shares under the program $ 60,200,000   $ 60,200,000    
At The Market Offering Agreement | Maximum          
Stockholder's Equity          
Sales agent commission payable, represented as a percentage of gross sales proceeds         3.00%