Quarterly report pursuant to Section 13 or 15(d)

Loans - Changes in Servicing Assets (Detail)

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Loans - Changes in Servicing Assets (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Transfers And Servicing [Abstract]    
Balance at Beginning of Period $ 5,542 $ 3,720
Additions (791)  
Amortization (329) (205)
Balance at End of Period $ 6,004 $ 3,515