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Deferred Revenue and Advance Payments (Detail) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Deferred Revenue Arrangement [Line Items]    
Deferred product licenses revenue, Current $ 12,710 $ 13,506
Deferred subscription services revenue, Current 14,704 15,763
Deferred product support revenue, Current 150,361 158,738
Deferred other services revenue, Current 8,573 9,149
Gross current deferred revenue and advance payments 186,348 197,156
Less: unpaid deferred revenue, Current (65,186) (96,461)
Net current deferred revenue and advance payments 121,162 100,695
Deferred product licenses revenue, Non-current 10,655 5,397
Deferred subscription services revenue, Non-current 1,959 2,138
Deferred product support revenue, Non-current 6,796 7,607
Deferred other services revenue, Non-current 666 795
Gross non-current deferred revenue and advance payments 20,076 15,937
Less: unpaid deferred revenue, Non-current (8,704) (6,942)
Net non-current deferred revenue and advance payments $ 11,372 $ 8,995