Investment Securities (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Held-to-Maturity:
Amortized Cost	$ 32,000	$ 35,000
Fair Value	34,000	37,000
Gross Unrealized Gains	2,000	2,000
Net Unrealized Gains (Losses)	2,000	2,000
Available-for-Sale:
Amortized Cost	342,420,000	355,541,000
Fair Value	342,438,000	352,437,000
Gross Unrealized Losses	(5,212,000)	(7,840,000)
Gross Unrealized Gains	5,230,000	4,736,000
Net Unrealized Gains (Losses)	18,000	(3,104,000)
Realized gains from called investment securities	0
Securities pledged
Fair value of securities pledged	312,700,000	322,400,000
Securities of government sponsored enterprises
Available-for-Sale:
Amortized Cost	61,853,000	63,843,000
Fair Value	59,950,000	60,789,000
Gross Unrealized Losses	(1,904,000)	(3,054,000)
Gross Unrealized Gains	1,000
Net Unrealized Gains (Losses)	(1,903,000)	(3,054,000)
Mortgage-backed securities (residential)
Available-for-Sale:
Amortized Cost	90,755,000	93,402,000
Fair Value	89,325,000	90,869,000
Gross Unrealized Losses	(2,053,000)	(3,062,000)
Gross Unrealized Gains	623,000	529,000
Net Unrealized Gains (Losses)	(1,430,000)	(2,533,000)
Collateralized mortgage obligations (residential)
Held-to-Maturity:
Amortized Cost	32,000	35,000
Fair Value	34,000	37,000
Gross Unrealized Gains	2,000	2,000
Net Unrealized Gains (Losses)	2,000	2,000
Available-for-Sale:
Amortized Cost	126,800,000	135,154,000
Fair Value	127,814,000	135,653,000
Gross Unrealized Losses	(1,235,000)	(1,666,000)
Gross Unrealized Gains	2,249,000	2,165,000
Net Unrealized Gains (Losses)	1,014,000	499,000
Corporate securities
Available-for-Sale:
Amortized Cost	38,296,000	38,442,000
Fair Value	39,242,000	39,530,000
Gross Unrealized Gains	946,000	1,088,000
Net Unrealized Gains (Losses)	946,000	1,088,000
Municipal securities
Available-for-Sale:
Amortized Cost	24,716,000	24,700,000
Fair Value	26,107,000	25,596,000
Gross Unrealized Losses	(20,000)	(58,000)
Gross Unrealized Gains	1,411,000	954,000
Net Unrealized Gains (Losses)	$ 1,391,000	$ 896,000