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Goodwill and Intangible Assets (Detail) - (Table 3) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]  
2013 (remaining nine months) $ 2,513
2014 3,284
2015 3,101
2016 2,795
2017 2,554
Thereafter 8,482
Total $ 22,729