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Estimated Future Amortization Expense of Purchased Intangible Assets with Definite Lives (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Finite Lived Intangible Assets [Line Items]  
2014 (remaining nine months) $ 1,091
2015 1,455
2016 1,455
2017 1,455
2018 1,455
Thereafter 2,910
Total $ 9,821