Securities (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Summary of pertinent information
Amortized Cost	$ 11,286	[1]
Gross Unrealized Gain/(Loss)	(2,253)
Non-Credit Related Other-Than Temporary Impairment	(2,371)
Fair Value	6,662
Total Cumulative Credit Related Other- Than- Temporary Impairment	(10,848)
Total Cumulative Other- Than- Temporary impairment to Date	(13,219)
Pooled Trust Preferred Securities [Member]
Summary of pertinent information
Amortized Cost	8,185	[1]
Gross Unrealized Gain/(Loss)	(2,253)
Non-Credit Related Other-Than Temporary Impairment	(2,640)
Fair Value	3,292
Total Cumulative Credit Related Other- Than- Temporary Impairment	(9,997)
Total Cumulative Other- Than- Temporary impairment to Date	(12,637)
Private mortgage-backed securities [Member]
Summary of pertinent information
Amortized Cost	3,101	[1]
Gross Unrealized Gain/(Loss)
Non-Credit Related Other-Than Temporary Impairment	269
Fair Value	3,370
Total Cumulative Credit Related Other- Than- Temporary Impairment	(851)
Total Cumulative Other- Than- Temporary impairment to Date	(582)
Trust Preferred Security A [Member] | Pooled Trust Preferred Securities [Member]
Summary of pertinent information
Class	C1
Amortized Cost	1,283	[1]
Gross Unrealized Gain/(Loss)
Non-Credit Related Other-Than Temporary Impairment	(889)
Fair Value	394
Total Cumulative Credit Related Other- Than- Temporary Impairment	(3,676)
Total Cumulative Other- Than- Temporary impairment to Date	(4,565)
Trust Preferred Security B [Member] | Pooled Trust Preferred Securities [Member]
Summary of pertinent information
Class	D
Amortized Cost		[1]
Gross Unrealized Gain/(Loss)
Non-Credit Related Other-Than Temporary Impairment
Fair Value
Total Cumulative Credit Related Other- Than- Temporary Impairment	(3,481)
Total Cumulative Other- Than- Temporary impairment to Date	(3,481)
Trust Preferred Security C [Member] | Pooled Trust Preferred Securities [Member]
Summary of pertinent information
Class	C1
Amortized Cost	506	[1]
Gross Unrealized Gain/(Loss)
Non-Credit Related Other-Than Temporary Impairment	(320)
Fair Value	186
Total Cumulative Credit Related Other- Than- Temporary Impairment	(482)
Total Cumulative Other- Than- Temporary impairment to Date	(802)
Trust Preferred Security D [Member] | Pooled Trust Preferred Securities [Member]
Summary of pertinent information
Class	D
Amortized Cost		[1]
Gross Unrealized Gain/(Loss)
Non-Credit Related Other-Than Temporary Impairment	1
Fair Value	1
Total Cumulative Credit Related Other- Than- Temporary Impairment	(990)
Total Cumulative Other- Than- Temporary impairment to Date	(989)
Trust Preferred Security E [Member] | Pooled Trust Preferred Securities [Member]
Summary of pertinent information
Class	C1
Amortized Cost	2,081	[1]
Gross Unrealized Gain/(Loss)
Non-Credit Related Other-Than Temporary Impairment	(1,432)
Fair Value	649
Total Cumulative Credit Related Other- Than- Temporary Impairment	(1,368)
Total Cumulative Other- Than- Temporary impairment to Date	(2,800)
Trust Preferred Security F [Member] | Pooled Trust Preferred Securities [Member]
Summary of pertinent information
Class	B
Amortized Cost	1,894	[1]
Gross Unrealized Gain/(Loss)	(1,221)
Non-Credit Related Other-Than Temporary Impairment
Fair Value	673
Total Cumulative Credit Related Other- Than- Temporary Impairment
Total Cumulative Other- Than- Temporary impairment to Date
Trust Preferred Security G [Member] | Pooled Trust Preferred Securities [Member]
Summary of pertinent information
Class	A1
Amortized Cost	2,421	[1]
Gross Unrealized Gain/(Loss)	(1,032)
Non-Credit Related Other-Than Temporary Impairment
Fair Value	1,389
Total Cumulative Credit Related Other- Than- Temporary Impairment
Total Cumulative Other- Than- Temporary impairment to Date
Private Mortgage Backed-Securities-One [Member] | Private mortgage-backed securities [Member]
Summary of pertinent information
Class	2A1
Amortized Cost	2,177	[1]
Gross Unrealized Gain/(Loss)
Non-Credit Related Other-Than Temporary Impairment	153
Fair Value	2,330
Total Cumulative Credit Related Other- Than- Temporary Impairment	(766)
Total Cumulative Other- Than- Temporary impairment to Date	(613)
Private Mortgage-Backed Securities-Two [Member] | Private mortgage-backed securities [Member]
Summary of pertinent information
Class	A19
Amortized Cost	924	[1]
Gross Unrealized Gain/(Loss)
Non-Credit Related Other-Than Temporary Impairment	116
Fair Value	1,040
Total Cumulative Credit Related Other- Than- Temporary Impairment	(85)
Total Cumulative Other- Than- Temporary impairment to Date	$ 31

[1] The amortized cost reflects previously recorded OTTI charges recognized in earnings for the applicable securities.