Investment Securities (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Summary of the securities portfolio by major classification
Amortized Cost	$ 346,271	$ 338,685
Gross Unrealized Gains	5,619	3,214
Gross Unrealized Losses	(1,111)	(2,449)
Total fair value securities	350,779	339,450
Government-sponsored enterprises and FFCB bonds [Member]
Summary of the securities portfolio by major classification
Amortized Cost		1,003
Gross Unrealized Gains		29
Gross Unrealized Losses
Total fair value securities		1,032
Obligations of states and political subdivisions [Member]
Summary of the securities portfolio by major classification
Amortized Cost	36,655	27,855
Gross Unrealized Gains	1,181	863
Gross Unrealized Losses	(57)
Total fair value securities	37,779	28,718
Mortgage-backed securities [Member]
Summary of the securities portfolio by major classification
Amortized Cost	131,169	130,949
Gross Unrealized Gains	1,831	1,460
Gross Unrealized Losses	(201)	(117)
Total fair value securities	132,799	132,292
SBA- backed securities [Member]
Summary of the securities portfolio by major classification
Amortized Cost	137,445	146,195
Gross Unrealized Gains	2,270	774
Gross Unrealized Losses	(113)	(332)
Total fair value securities	139,602	146,637
Corporate Bonds [Member]
Summary of the securities portfolio by major classification
Amortized Cost	41,002	32,683
Gross Unrealized Gains	337	88
Gross Unrealized Losses	(740)	(2,000)
Total fair value securities	$ 40,599	$ 30,771