Quarterly report pursuant to Section 13 or 15(d)

Revenue (Tables)

v3.21.2
Revenue (Tables)
6 Months Ended
Jun. 30, 2021
Revenue from Contract with Customer [Abstract]  
Changes in Deferred Revenue The following table presents changes in the deferred revenue balance as of June 30:
2021 2020
Balance as of January 1 $ 101,542  $ 121,339 
Deferral of revenue 131,895  103,542 
Recognition of deferred revenue (105,590) (121,273)
Balance as of June 30 $ 127,847  $ 103,608