Loans and Allowance for Loan Losses (Details 4) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Loans and Allowance For Loan Losses [Abstract]
Unpaid Principal Balance Of Covered Acquired Loans	$ 230,600,000	$ 272,700,000
Real Estate Loans that Collateralize Secured Borrowings from FHLB and Federal Reserve Bank	358,100,000	462,400,000
LongTermNotesAndLoansAbstract
Maturity Of Home Equity Loans Current Year	485,000
Maturity Of Home Equity Loans One Year	1,733,000
Maturity Of Home Equity Loans One To Two Years	1,343,000
Maturity Of Home Equity Loans Two To Three Years	3,316,000
Maturity Of Home Equity Loans Three To Four Years	3,367,000
Maturity Of Home Equity Loans Four To Five Years	4,801,000
Maturity Of Home Equity Loans More Than Five Years	101,523,000
Total Home Equity Loans	$ 116,568,000