Revenue Recognition (Tables)
|6 Months Ended|
Jun. 30, 2017
|Deferred Revenue Disclosure [Abstract]|
|Schedule of Deferred Revenue||
Deferred revenue consists of the following:
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://www.xbrl.org/2003/role/presentationRef