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Summary of Significant Accounting Policies - Narrative (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Disaggregation of Revenue [Line Items]          
Accounts receivable, allowance for credit loss $ 0   $ 0   $ 0
Intangible assets, net $ 400,000   $ 400,000    
Intangible asset, useful life 5 years   5 years    
Amortization of intangible assets $ 18,000 $ 18,000 $ 53,000 $ 53,000  
Expected amortization, remainder of fiscal year 70,000   70,000    
Expected amortization, year one 70,000   70,000    
Expected amortization, year two 70,000   70,000    
Revenue 0 0 70,000 0  
Revenue from collaborative arrangement $ 0 $ 0 0 $ 0  
Royalty          
Disaggregation of Revenue [Line Items]          
Revenue     $ 0