Securities (Details 1) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013 Securities	Dec. 31, 2012 Securities
Schedule of investments gross unrealized losses and fair value
Less than 12 Months, # of Securities	28	18
Less than 12 Months, Fair Value	$ 79,773	$ 48,029
Less than 12 Months, Unrealized losses	648	414
12 Months or more, # of Securities	16	16
12 Months or more, Fair Value	59,901	59,258
12 Months or more, Unrealized losses	8,760	9,401
Total, # of Securities	44	34
Total, Fair Value	139,674	107,287
Total, Unrealized losses	9,408	9,815
Trust preferred securities [Member]
Schedule of investments gross unrealized losses and fair value
Less than 12 Months, # of Securities
Less than 12 Months, Fair Value
Less than 12 Months, Unrealized losses
12 Months or more, # of Securities	9	9
12 Months or more, Fair Value	36,353	36,179
12 Months or more, Unrealized losses	8,063	8,234
Total, # of Securities	9	9
Total, Fair Value	36,353	36,179
Total, Unrealized losses	8,063	8,234
Municipal securities [Member]
Schedule of investments gross unrealized losses and fair value
Less than 12 Months, # of Securities	10	5
Less than 12 Months, Fair Value	8,130	4,179
Less than 12 Months, Unrealized losses	210	58
12 Months or more, # of Securities	2	2
12 Months or more, Fair Value	3,032	3,059
12 Months or more, Unrealized losses	213	186
Total, # of Securities	12	7
Total, Fair Value	11,162	7,238
Total, Unrealized losses	423	244
Corporate bonds [Member]
Schedule of investments gross unrealized losses and fair value
Less than 12 Months, # of Securities	2	5
Less than 12 Months, Fair Value	6,078	15,604
Less than 12 Months, Unrealized losses	12	110
12 Months or more, # of Securities	5	5
12 Months or more, Fair Value	20,516	20,020
12 Months or more, Unrealized losses	484	981
Total, # of Securities	7	10
Total, Fair Value	26,594	35,624
Total, Unrealized losses	496	1,091
U.S. sponsored entities [Member]
Schedule of investments gross unrealized losses and fair value
Less than 12 Months, # of Securities	16	8
Less than 12 Months, Fair Value	65,565	28,246
Less than 12 Months, Unrealized losses	426	246
12 Months or more, # of Securities
12 Months or more, Fair Value
12 Months or more, Unrealized losses
Total, # of Securities	16	8
Total, Fair Value	65,565	28,246
Total, Unrealized losses	$ 426	$ 246