v3.26.1
Summary of Significant Accounting Policies - Additional Information (Details)
 3 Months Ended 12 Months Ended
Mar. 31, 2026
USD ($)
Segment
Mar. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
Finite-Lived Intangible Assets [Line Items]      
Accumulated deficit $ (181,612,000)   $ (180,312,000)
Net cash provided by (used in) operating activities (196,000) $ (350,000)  
Working capital deficit (96,200,000)    
Cash and cash equivalents 594,000 2,181,000 1,371,000
Deposits 250,000   250,000
Restricted cash 1,861,000 $ 1,861,000 1,861,000
FDIC limit not exceeded by $ 32,000   32,000
Operating segment | Segment 1    
Reportable segment | Segment 1    
ASU 2025-05      
Finite-Lived Intangible Assets [Line Items]      
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] true    
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false] true    
Change in Accounting Principle, Accounting Standards Update, Transition Option Elected [Extensible Enumeration] ASU 2025-05    
One Financial Institution      
Finite-Lived Intangible Assets [Line Items]      
Cash uninsured amount $ 118,000   $ 994,000