Securities (Details 3) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012 holding	Dec. 31, 2011 holding
Summary of gross unrealized losses and fair value of investments
No of holdings	15	4
Fair value, less than 12 months	$ 14,262
Unrealized losses, less than 12 months	(108)
Fair value, 12 months or longer	2,118	10,734
Unrealized losses, 12 months or longer	(2,464)	(3,977)
Fair value, Total	16,380	10,734
Unrealized losses, Total	(2,572)	(3,977)
Agency Mortgage-Backed Securities [Member]
Summary of gross unrealized losses and fair value of investments
No of holdings	1
Fair value, less than 12 months	3,843
Unrealized losses, less than 12 months	(18)
Fair value, 12 months or longer
Unrealized losses, 12 months or longer
Fair value, Total	3,843
Unrealized losses, Total	(18)
Single Issuer Trust Preferred Securities Issued by Banks and Insurers [Member]
Summary of gross unrealized losses and fair value of investments
No of holdings		2
Fair value, less than 12 months
Unrealized losses, less than 12 months
Fair value, 12 months or longer		8,617
Unrealized losses, 12 months or longer		(1,459)
Fair value, Total		8,617
Unrealized losses, Total		(1,459)
Agency Collateralized Mortgage Obligations [Member]
Summary of gross unrealized losses and fair value of investments
No of holdings	1
Fair value, less than 12 months	9,888
Unrealized losses, less than 12 months	(75)
Fair value, 12 months or longer
Unrealized losses, 12 months or longer
Fair value, Total	9,888
Unrealized losses, Total	(75)
Pooled Trust Preferred Securities Issued by Banks and Insurers [Member]
Summary of gross unrealized losses and fair value of investments
No of holdings	2	2
Fair value, less than 12 months
Unrealized losses, less than 12 months
Fair value, 12 months or longer	2,118	2,117
Unrealized losses, 12 months or longer	(2,464)	(2,518)
Fair value, Total	2,118	2,117
Unrealized losses, Total	(2,464)	(2,518)
Marketable Equity Securities [Member]
Summary of gross unrealized losses and fair value of investments
No of holdings	11
Fair value, less than 12 months	531
Unrealized losses, less than 12 months	(15)
Fair value, 12 months or longer
Unrealized losses, 12 months or longer
Fair value, Total	531
Unrealized losses, Total	$ (15)