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Components of Deposits (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Deposits By Type [Line Items]    
Noninterest-bearing demand deposits $ 339,680 $ 343,352
Interest-bearing deposits:    
Interest-bearing demand deposits 361,821 353,321
Money market accounts 237,845 237,257
Savings deposits 286,165 263,019
Certificates of deposit 606,178 706,568
Individual retirement accounts 119,053 126,658
Total interest-bearing deposits 1,611,062 1,686,823
Total deposits $ 1,950,742 $ 2,030,175