Deferred Revenue (Tables)
|12 Months Ended|
Dec. 31, 2019
|Deferred Revenue Disclosure [Abstract]|
|Schedule of deferred revenue||
Tabular disclosure of the type of arrangements and the corresponding amounts that comprise the current and noncurrent balance of deferred revenue as of the balance sheet date.
Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef