Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Schedule of Deferred Revenue (Details)

v3.19.1
Summary of Significant Accounting Policies - Schedule of Deferred Revenue (Details)
$ in Thousands
Mar. 31, 2019
USD ($)
Deferred Revenue $ 119,343
0-12 Months [Member]  
Deferred Revenue 97,123
13-24 Months [Member]  
Deferred Revenue $ 22,220