Investment Securities - Investments in continuous loss position (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Schedule of Available-for-sale Securities
Less Than 12 Months, Fair value	$ 49,536	$ 86,977
Less Than 12 Months, Unrealized losses	562	579
12 Months or More, Fair value	5,362	22,818
12 Months or More, Unrealized losses	78	543
Total, Fair value	54,898	109,795
Total, Unrealized losses	640	1,122
Government sponsored agencies - Residential mortgage-backed securities
Schedule of Available-for-sale Securities
Continuous unrealized loss investments, number of positions	1	3
Less Than 12 Months, Fair value	0	13,121
Less Than 12 Months, Unrealized losses	0	45
12 Months or More, Fair value	4,368	16,751
12 Months or More, Unrealized losses	35	348
Total, Fair value	4,368	29,872
Total, Unrealized losses	35	393
Government sponsored agencies - Collateralized mortgage obligations
Schedule of Available-for-sale Securities
Continuous unrealized loss investments, number of positions		2
Less Than 12 Months, Fair value	49,308	70,421
Less Than 12 Months, Unrealized losses	561	505
12 Months or More, Fair value	0	5,043
12 Months or More, Unrealized losses	0	87
Total, Fair value	49,308	75,464
Total, Unrealized losses	561	592
Private label collateralized mortgage obligations
Schedule of Available-for-sale Securities
Continuous unrealized loss investments, number of positions	1	1
Less Than 12 Months, Fair value	228	0
Less Than 12 Months, Unrealized losses	1	0
12 Months or More, Fair value	921	971
12 Months or More, Unrealized losses	4	57
Total, Fair value	1,149	971
Total, Unrealized losses	5	57
State and municipal securities
Schedule of Available-for-sale Securities
Less Than 12 Months, Fair value		3,429
Less Than 12 Months, Unrealized losses		28
12 Months or More, Fair value		0
12 Months or More, Unrealized losses		0
Total, Fair value		3,429
Total, Unrealized losses		28
Common and preferred stocks
Schedule of Available-for-sale Securities
Continuous unrealized loss investments, number of positions	2	1
Less Than 12 Months, Fair value	0	6
Less Than 12 Months, Unrealized losses	0	1
12 Months or More, Fair value	73	53
12 Months or More, Unrealized losses	39	51
Total, Fair value	73	59
Total, Unrealized losses	$ 39	$ 52