Securities Available for Sale (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Schedule Of Available For Sale Securities [Line Items]    
Amortized Cost $ 394,317 $ 388,337
Gross Unrealized Gains 3,958 5,219
Gross Unrealized Losses (3,963) (3,727)
Fair Value 394,312 389,829
Corporate bonds    
Schedule Of Available For Sale Securities [Line Items]    
Amortized Cost 1,134 936
Gross Unrealized Gains 5 3
Gross Unrealized Losses (5) (8)
Fair Value 1,134 931
Collateralized Mortgage Obligations    
Schedule Of Available For Sale Securities [Line Items]    
Amortized Cost 28,035 25,988
Gross Unrealized Gains 0 98
Gross Unrealized Losses (870) (911)
Fair Value 27,165 25,175
Small Business Administration    
Schedule Of Available For Sale Securities [Line Items]    
Amortized Cost 19,755 23,193
Gross Unrealized Gains 1 1
Gross Unrealized Losses (457) (775)
Fair Value 19,299 22,419
U.S. Treasury and U.S. government sponsored entities    
Schedule Of Available For Sale Securities [Line Items]    
Amortized Cost 11,120 24,515
Gross Unrealized Gains 38 418
Gross Unrealized Losses (52) (112)
Fair Value 11,106 24,821
State and political subdivisions    
Schedule Of Available For Sale Securities [Line Items]    
Amortized Cost 136,781 90,369
Gross Unrealized Gains 2,354 2,183
Gross Unrealized Losses (412) (671)
Fair Value 138,723 91,881
Mortgage-backed securities - residential    
Schedule Of Available For Sale Securities [Line Items]    
Amortized Cost 197,289 223,216
Gross Unrealized Gains 1,433 2,395
Gross Unrealized Losses (2,135) (1,249)
Fair Value 196,587 224,362
Equity securities    
Schedule Of Available For Sale Securities [Line Items]    
Amortized Cost 203 120
Gross Unrealized Gains 127 121
Gross Unrealized Losses (32) (1)
Fair Value $ 298 $ 240