Quarterly report pursuant to Section 13 or 15(d)

Cryptocurrencies (Summary of Additional Information About Cryptocurrencies) (Details)

v3.20.2
Cryptocurrencies (Summary of Additional Information About Cryptocurrencies) (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Indefinite-lived Intangible Assets (Excluding Goodwill) [Abstract]    
Beginning balance, January 1,2020 $ 3,839  
Revenue recognized from cryptocurrencies mined 6,717  
Mining pool operating fees (94)  
Proceeds from sale of cryptocurrencies (1,029)  
Realized gain on sale/exchange of cryptocurrencies 491  
Impairment of cryptocurrencies (989)  
Cryptocurrencies received from sale of equipment 52
Ending balance, September 30, 2020 $ 8,987