Deposits (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Deposits, by Component [Abstract]    
Noninterest-bearing demand deposits $ 558,018 $ 488,224
Demand and money market 788,373 701,556
Savings deposits 321,621 325,133
Time deposits 675,806 620,172
Brokered deposits 114,204 67,367
Total deposits $ 2,458,022 $ 2,202,452
Percentage of Noninterest and Interest Bearing Domestic Deposit Liabilities [Abstract]    
Noninterest-bearing demand deposits 22.70% 22.20%
Interest-bearing deposits:    
Demand and money market 32.10% 31.80%
Savings deposits 13.10% 14.80%
Time deposits 27.50% 28.10%
Brokered deposits 4.60% 3.10%
Total deposits 100.00% 100.00%