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
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Indefinite-lived Intangible Assets (Excluding Goodwill) [Abstract]    
Beginning balance, January 1,2020 $ 3,839  
Revenue recognized from cryptocurrencies mined 4,280  
Mining pool operating fees (64)  
Realized gain on exchange of cryptocurrencies 106  
Impairment of cryptocurrencies (989)  
Cryptocurrencies received from sale of equipment 52
Ending balance, June 30, 2020 $ 7,224