Deposits - Summary of Deposit Balances, by Type (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Banking And Thrift [Abstract]    
Demand deposits $ 255,639 $ 204,079
NOW deposits 210,277 180,629
Money market deposits 847,360 606,861
Regular savings and other deposits 259,608 245,634
Total non-certificate accounts 1,572,884 1,237,203
Term certificates less than $100,000 296,525 300,648
Term certificates $100,000 and greater 379,191 327,582
Total term certificates 675,716 628,230
Total deposits $ 2,248,600 $ 1,865,433