Securities - Amortized Cost, Gross Unrealized Gains and Losses and Fair Values of Securities Available for Sale (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 220,571	$ 222,019
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	2,880	2,754
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(5,941)	(8,651)
Fair Value	217,510	216,122
U.S. Government agencies and corporations
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	71,683	71,851
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	0	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(4,242)	(6,463)
Fair Value	67,441	65,388
Mortgage backed securities: residential
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	94,222	94,313
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	1,360	1,362
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(1,063)	(1,245)
Fair Value	94,519	94,430
Collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	22,163	18,650
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	247	255
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(271)	(250)
Fair Value	22,139	18,655
State and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	32,503	32,521
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	1,273	1,137
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(365)	(693)
Fair Value	33,411	32,965
Preferred securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		4,684
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax		0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax		0
Fair Value		$ 4,684