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Deferred Revenue and Advance Payments (Detail) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Deferred Revenue Disclosure [Abstract]    
Deferred product licenses revenue, Current $ 754 $ 993
Deferred subscription services revenue, Current 40,295 35,589
Deferred product support revenue, Current 143,524 166,477
Deferred other services revenue, Current 3,525 6,801
Total current deferred revenue and advance payments 188,098 209,860
Deferred product licenses revenue, Non-current 0 68
Deferred subscription services revenue, Non-current 2,639 1,064
Deferred product support revenue, Non-current 5,272 6,203
Deferred other services revenue, Non-current 586 754
Total non-current deferred revenue and advance payments $ 8,497 $ 8,089