Servicing - Loan Servicing Fee Income (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Servicing Asset At Amortized Value Additional Disclosures [Abstract]      
Contractually specified servicing fees $ 417 $ 354 $ 288
Late fees 11 10 11
Ancillary fees 2 3 2
Loan servicing fee income, total $ 430 $ 367 $ 301