Quarterly report pursuant to Section 13 or 15(d)

- Deferred Revenue Activity (Details)

v3.10.0.1
- Deferred Revenue Activity (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2018
USD ($)
Change In Contract With Customer, Liability Rollforward [Roll Forward]  
Beginning balance $ 1,919
Deferral of revenue 1,828
Recognition of deferred revenue (1,267)
Ending balance $ 2,480