Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Narrative (Details)

v3.22.1
Summary of Significant Accounting Policies - Narrative (Details)
 1 Months Ended 12 Months Ended
Jul. 15, 2020
USD ($)
Jul. 31, 2020
USD ($)
Mar. 31, 2020
USD ($)
Dec. 31, 2021
USD ($)
consumer
retirement_plan
Dec. 31, 2020
USD ($)
Jan. 01, 2021
USD ($)
Apr. 30, 2019
Product Information [Line Items]              
Operating lease, liability       $ 1,546,000   $ 2,101,000  
Right-of-use asset       1,260,000 $ 0 2,101,000  
Deferred rent       $ 0 180,000    
Number of customers per impressions | consumer       1,000      
Cash equivalents       $ 0 0    
Restricted cash       0 91,000    
Purchase of digital currencies       41,284,000 0    
Proceeds from receipt of digital assets       680,000      
Impairment of digital currencies       9,383,000 0    
Purchase of other digital currencies       287,000      
Impairment of other digital currencies       $ 159,000      
Number of employee retirement plans | retirement_plan       1      
Employer matching contributions made to retirement plan       $ 0 $ 0    
Digital Assets              
Product Information [Line Items]              
Aggregate cost basis of digital currency holdings       $ 41,964,000      
Accounting Standards Update 2016-02              
Product Information [Line Items]              
Operating lease, liability           2,101,000  
Right-of-use asset           2,101,000  
Short-term deferred rent           8,000  
Deferred rent           $ 180,000  
Senior Convertible Note              
Product Information [Line Items]              
Interest rate of notes (as a percent)     7.00%        
Principal amount of note     $ 3,000,000        
Proceeds from debt, net of issuance costs     2,371,000        
Proceeds from issuance of debt     $ 2,760,000        
Convertible notes              
Product Information [Line Items]              
Interest rate of notes (as a percent) 7.00%           7.00%
Proceeds from issuance of debt $ 1,751,000 $ 1,751,000          
Convertible notes | Series A Note              
Product Information [Line Items]              
Principal amount of note $ 4,320,000 $ 4,320,000          
Minimum              
Product Information [Line Items]              
Term of license subscription agreement (in months)       1 year      
Maximum              
Product Information [Line Items]              
Term of license subscription agreement (in months)       3 years