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Basis of Presentation and Significant Accounting Policies - Estimated Amortization Expense for Amortizable Intangible Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Goodwill And Intangible Assets Disclosure [Abstract]  
Estimated future amortization expense 2013 $ 1,385
Estimated future amortization expense 2014 2,544
Estimated future amortization expense 2015 2,420
Estimated future amortization expense 2016 2,407
Estimated future amortization expense 2017 $ 2,366