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Commercial Mortgage Banking - Components of Mortgage Servicing Rights Fees (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Transfers And Servicing [Abstract]    
Servicing fees $ 1,344 $ 1,208
Late fees   62
Ancillary fees 93 57
Total MSR fees $ 1,437 $ 1,327