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Deposits - Scheduled Maturities or Repricing of Time Deposits (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Deposits [Line Items]    
2012   $ 66,253
2013 94,974 12,919
2014 8,862 6,465
2015 14,282 13,401
2016 13,480 18,176
2017 5,792  
Thereafter 24,246 23,608
Total maturities or repricing of time deposits $ 161,636 $ 140,822