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Equity - Stock-Based Compensation (Details)
9 Months Ended
Sep. 30, 2022
shares
Sep. 30, 2021
shares
Stock Based Compensation Plans    
Options outstanding (in shares) 10,000  
Options exercisable (in shares) 10,000  
Options expired and cancelled (in shares) 5,000  
Stock options granted (in shares) 0 0
2015 Plan    
Stock Based Compensation Plans    
Ratio of shares subject to award granted 1  
2021 Plan    
Stock Based Compensation Plans    
Total shares reserved for issuance of common stock related to the conversion of preferred stock 1,900,000