Annual report pursuant to Section 13 and 15(d)

Long-Term Assets (Schedule of Total Estimated Amortization of Intangible Assets) (Details)

v3.21.1
Long-Term Assets (Schedule of Total Estimated Amortization of Intangible Assets) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2021
USD ($)
Feb. 29, 2020
Future amortization        
2021 $ 86      
2022 86      
2023 86      
2024 78      
Total 336 $ 459    
Amortization expense of intangible assets 167 $ 86    
Patents [Member]        
Future amortization        
Write-off costs $ 50      
Bitmain S17 Pro Antminers from Bitmain [Member]        
Future amortization        
Number of computers acquired   4,000   1,000
Value of computers acquired   $ 6,300    
Deposits   $ 1,400    
S17 Pro miners [Member]        
Future amortization        
Number of computers acquired 4,000 1,000    
Bitmain S17 Pro Antminers from Bitmain One [Member]        
Future amortization        
Number of computers acquired   3,000    
Bitmain S19 Pro and S19j Pro Antminers from Bitmain [Member]        
Future amortization        
Number of computers acquired 33,646      
Value of computers acquired $ 76,100      
Deposits $ 31,900      
Miners description As of December 31, 2020, the Company had received 3,043 of the new miners, including all 1,040 model S19 miners and 2,003 model S19-Pro miners, but had not yet received 30,603 of the new miners, including 18,603 model S19-Pro miners and all 12,000 model S19j-Pro miners.      
Bitmain S19 Pro and S19j Pro Antminers from Bitmain [Member] | Subsequent Event [Member]        
Future amortization        
Value of computers acquired     $ 37,600  
Agreement with Bitmain for acquisition of S19 Antiminers [Member]        
Future amortization        
Number of computers acquired 3,043      
Value of computers acquired $ 6,600