Annual report pursuant to Section 13 and 15(d)

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

v3.20.1
Cryptocurrencies (Summary of Additional Information About Cryptocurrencies) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Indefinite-lived Intangible Assets (Excluding Goodwill) [Abstract]    
Cryptocurrencies, beginning balance $ 707 $ 200
Revenue recognized from cryptocurrencies mined 6,741 7,749
Mining pool operating fees (135) (155)
Purchase of cryptocurrencies 5,625
Purchase of minor equipment with cryptocurrencies 99
Sale / trade of cryptocurrencies (3,196) (9,237)
Realized gain on sale of cryptocurrencies 665 26
Impairment of cryptocurrencies (844) (3,501)
Cryptocurrencies, ending balance $ 3,839 $ 707