Goodwill and Identified Intangible Assets - Summary of Goodwill and Identified Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified					12 Months Ended				12 Months Ended				12 Months Ended				12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Developed core technology [Member]	Dec. 31, 2012 Developed core technology [Member]	Dec. 31, 2013 Developed core technology [Member] Minimum [Member]	Dec. 31, 2013 Developed core technology [Member] Maximum [Member]	Dec. 31, 2013 Customer relationships/contracts [Member]	Dec. 31, 2012 Customer relationships/contracts [Member]	Dec. 31, 2013 Customer relationships/contracts [Member] Minimum [Member]	Dec. 31, 2013 Customer relationships/contracts [Member] Maximum [Member]	Dec. 31, 2013 Trademarks and tradenames [Member]	Dec. 31, 2012 Trademarks and tradenames [Member]	Dec. 31, 2013 Trademarks and tradenames [Member] Minimum [Member]	Dec. 31, 2013 Trademarks and tradenames [Member] Maximum [Member]	Dec. 31, 2013 Maintenance agreements and related relationships [Member]	Dec. 31, 2012 Maintenance agreements and related relationships [Member]	Dec. 31, 2013 Maintenance agreements and related relationships [Member] Minimum [Member]	Dec. 31, 2013 Maintenance agreements and related relationships [Member] Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired finite-lived intangible assets, weighted average useful life					4 years	6 years			5 years	6 years			4 years	5 years			6 years	7 years
Gross Carrying Amount	$ 221,704	$ 221,704	$ 136,145	$ 136,145			$ 67,098	$ 67,098			$ 11,361	$ 11,361			$ 7,100	$ 7,100
Accumulated Amortization	(190,585)	(163,257)	(121,681)	(102,449)			(53,772)	(48,150)			(10,565)	(9,145)			(4,567)	(3,513)
Total	$ 31,119	$ 58,447	$ 14,464	$ 33,696			$ 13,326	$ 18,948			$ 796	$ 2,216			$ 2,533	$ 3,587