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Condensed Statements of Stockholders’ Equity (unaudited) - USD ($)
$ in Thousands
Total
Follow-on Offering
At-the-Market Equity Offering
Common Stock
Common Stock
Follow-on Offering
Common Stock
At-the-Market Equity Offering
Additional Paid-In Capital
Additional Paid-In Capital
Follow-on Offering
Additional Paid-In Capital
At-the-Market Equity Offering
Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2023       27,823,465            
Beginning balance at Dec. 31, 2023 $ 20,654     $ 28     $ 524,435     $ (503,809)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net loss (8,925)                 (8,925)
Issuance of common stock pursuant to stock option exercises (in shares)       409,045            
Issuance of common stock pursuant to stock option exercises 721           721      
Issuance of common stock upon vesting of restricted stock units (in shares)       522,483            
Issuance of common stock upon vesting of restricted stock units 0     $ 1     (1)      
Shares withheld for taxes (in shares)       (37,541)            
Shares withheld for taxes (649)           (649)      
Stock-based compensation 2,540           2,540      
Ending balance (in shares) at Mar. 31, 2024       28,717,452            
Ending balance at Mar. 31, 2024 $ 14,341     $ 29     527,046     (512,734)
Beginning balance (in shares) at Dec. 31, 2024 30,145,039     30,145,039            
Beginning balance at Dec. 31, 2024 $ 8,013     $ 30     538,933     (530,950)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net loss (6,589)                 (6,589)
Issuance of shares (in shares)         7,475,000 18,590        
Issuance of shares   $ 69,384 $ 224   $ 7     $ 69,377 $ 224  
Repurchase of common stock from KCK Ltd. (in shares)       (5,270,845)            
Repurchase of common stock from KCK Ltd. $ (49,546)     $ (5)     (49,541)      
Issuance of common stock pursuant to stock option exercises (in shares) 101,301     101,301            
Issuance of common stock pursuant to stock option exercises $ 385     $ 1     384      
Issuance of common stock upon vesting of restricted stock units (in shares)       299,535            
Issuance of common stock upon vesting of restricted stock units 0                  
Shares withheld for taxes (in shares)       (17,380)            
Shares withheld for taxes (228)           (228)      
Stock-based compensation $ 2,626           2,626      
Ending balance (in shares) at Mar. 31, 2025 32,751,240     32,751,240            
Ending balance at Mar. 31, 2025 $ 24,269     $ 33     $ 561,775     $ (537,539)