Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition - Deferred Revenue Activity (Details)

v3.19.2
Revenue Recognition - Deferred Revenue Activity (Details)
$ in Thousands
6 Months Ended
Jun. 30, 2019
USD ($)
Change In Contract With Customer, Liability Rollforward [Roll Forward]  
Beginning balance $ 2,597
Deferral of revenue 1,346
Recognition of deferred revenue (813)
Ending balance $ 3,130