Quarterly report pursuant to Section 13 or 15(d)

REVENUE - Deferred revenue (Details)

v3.22.2
REVENUE - Deferred revenue (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
REVENUE          
Beginning balance $ 180,333 $ 158,766 $ 168,607 $ 149,224  
Deferral of unearned revenue 63,628 60,655 125,263 116,034  
Recognition of unearned revenue (50,989) (46,470) (100,898) (92,307)  
Ending balance 192,972 $ 172,951 192,972 $ 172,951  
Long-term unearned revenue $ 27,700   $ 27,700   $ 18,400
Long-term unearned revenue, recognition period (or less)     5 years