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Goodwill and Other Intangible Assets - Estimated Amortization Expense Related to Amortized Intangible Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Goodwill And Intangible Assets Disclosure [Abstract]  
2013 $ 325
2014 992
2015 791
2016 667
2017 549
Thereafter $ 997