Schedule of Deferred Revenue (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Deferred Revenue Arrangement [Line Items]
Current deferred revenue	$ 143,001	$ 134,672
Long-term deferred revenue	16,214	20,859
Total deferred revenue	159,215	155,531
Software license
Deferred Revenue Arrangement [Line Items]
Current deferred revenue	36,429	38,961
Long-term deferred revenue	15,914	19,878
Maintenance
Deferred Revenue Arrangement [Line Items]
Current deferred revenue	89,474	83,467
Cloud
Deferred Revenue Arrangement [Line Items]
Current deferred revenue	8,996	4,209
Services and other
Deferred Revenue Arrangement [Line Items]
Current deferred revenue	8,102	8,035
Maintenance and services
Deferred Revenue Arrangement [Line Items]
Long-term deferred revenue	$ 300	$ 981