Borrowings (Details Textual) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
London Inter Bank Offering Rate	0.46%
Floating Interest Rate	1.86%
Putable Advances [Member]
Federal Home Loan Bank Advances, Balance Amount Yet To Be Called Series One	$ 14.0
Federal Home Loan Bank Advances, Interest Rate On Balance Amount Yet To Be Called Series One	2.69%
Federal Home Loan Bank Advances, Branch Of Fhlb Bank Call Date Earliest One	October 15, 2012
Federal Home Loan Bank Advances, Branch Of Fhlb Bank, Call Date Last One	December 12, 2012
Federal Home Loan Bank Advances, General Debt Obligations Disclosures, Due Date Earliest One	11-Feb-13
Federal Home Loan Bank Advances, General Debt Obligations Disclosures, Due Date Last	12-Mar-18
Federal Home Loan Bank Advances, Balance Amount Yet To Be Called Series Two	30.0
Federal Home Loan Bank Advances, Interest Rate On Balance Amount Yet To Be Called Series Two	4.76%
Federal Home Loan Bank Advances, Branch Of Fhlb Bank, Call Date Earliest Two	October 28, 2013
Federal Home Loan Bank Advances, Branch Of Fhlb Bank, Call Date Last Two	January 14, 2015
Strike Rate Advances [Member]
Federal Home Loan Bank Advances, Interest Rate Minimum	7.50%
Federal Home Loan Bank Advances Interest Rate Maximum	8.00%
London Inter Bank Offering Rate	0.36%
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Weighted Average Interest Rate	3.61%
Federal Home Loan Bank, Advances, Branch Of Fhlb Bank, Earliest Due Date	October 15, 2012
Federal Home Loan Bank, Advances, Branch of Fhlb Bank, Last Due Date	February 25, 2013
Trust Affiliate I [Member]
Issuance Of Trust Preferred Securities	20
Issuance Of Subordinated Debentures	20.6
Preferred Securities, Variable Interest Rate	LIBOR rate plus 1.38
Coupon Rate On Preferred Securities, Period End	1.74%	1.73%
Floating Interest Rate	1.86%
Trust Affiliate Ii [Member]
Issuance Of Trust Preferred Securities	15
Issuance Of Subordinated Debentures	$ 15.5
Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate of Amounts Due within One Year of Balance Sheet Date	6.441%
Preferred Securities, Variable Interest Rate	LIBOR plus 1.50