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Deposits - Summary of Deposits (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Banking And Thrift [Abstract]    
Noninterest-bearing deposits $ 124,390 $ 124,777
NOW account deposits 302,677 234,163
Money Market deposits 42,240 39,688
Passbook account deposits 184,085 178,412
Time deposits 646,771 645,727
Total $ 1,300,163 $ 1,222,767
Percentage of noninterest-bearing deposits 9.60% 10.20%
Percentage of NOW account deposits 23.30% 19.20%
Percentage of Money Market deposits 3.20% 3.20%
Percentage of Passbook account deposits 14.20% 14.60%
Percentage of Time deposits 49.70% 52.80%
Percentage of deposits, total 100.00% 100.00%