Goodwill and Intangible Assets - Summary of Estimated Future Intangible Amortization Expense (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
2014	$ 4,584
2015	4,584
2016	4,183
2017	2,176
2018	2,072
Thereafter	3,873
Total amortization expense	21,472	25,959
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
2014	5,064
2015	1,758
2016	1,612
2017	1,611
2018	1,591
Thereafter	3,375
Total amortization expense	$ 15,011