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Goodwill and Other Intangible Assets - Estimated Amortization Expense of Mortgage Servicing Rights (Detail) (Mortgage Servicing Rights [Member], USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Mortgage Servicing Rights [Member]
 
Finite-Lived Intangible Assets [Line Items]  
2014 $ 837
2015 734
2016 632
2017 541
2018 456
Thereafter $ 2,319