Digital Currencies (Tables)
|12 Months Ended|
Dec. 31, 2018
|Indefinite-lived Intangible Assets (Excluding Goodwill) [Abstract]|
|Summary of Additional Information About Digital Currencies||
The following table presents additional information about digital currencies:
Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance and exist in perpetuity, by either major class or business segment.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef