Schedule of Deferred Revenue (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Deferred Revenue Arrangement [Line Items]
Current deferred revenue	$ 134,077	$ 110,882
Long-term deferred revenue	29,396	34,196
Total deferred revenue	163,473	145,078
Software license
Deferred Revenue Arrangement [Line Items]
Current deferred revenue	29,980	28,826
Long-term deferred revenue	28,324	32,727
Maintenance
Deferred Revenue Arrangement [Line Items]
Current deferred revenue	93,499	72,715
Cloud
Deferred Revenue Arrangement [Line Items]
Current deferred revenue	4,212	2,552
Long-term deferred revenue	225	354
Services and other
Deferred Revenue Arrangement [Line Items]
Current deferred revenue	6,386	6,789
Maintenance and services
Deferred Revenue Arrangement [Line Items]
Long-term deferred revenue	$ 847	$ 1,115