Quarterly report pursuant to Section 13 or 15(d)

REVENUE - Deferred revenue (Details)

v3.22.1
REVENUE - Deferred revenue (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
REVENUE    
Beginning balance $ 168,607 $ 149,224
Deferral of unearned revenue 61,635 55,379
Recognition of unearned revenue (49,909) (45,837)
Ending balance 180,333 158,766
Long-term unearned revenue $ 23,800 $ 18,400
Long-term unearned revenue, recognition period (or less) 5 years