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Property and Equipment - Schedule of Property and Equipment (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Property, Plant and Equipment [Abstract]    
Computer hardware and software $ 17 $ 10
Crypto-currency mining machines 3,344 3,685
Property and equipment, gross 3,361 3,695
Less: Accumulated depreciation (11) (579)
Property and equipment, net $ 3,350 $ 3,116