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Deposits - Summary of Major Types of Deposits (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Banking And Thrift [Abstract]    
Non-interest-bearing $ 218,124 $ 207,608
Interest-bearing checking 865,023 913,753
Money market deposit 123,701 116,947
Savings 297,739 290,512
Time deposits 215,544 217,943
Total deposits $ 1,720,131 $ 1,746,763