Commitments And Contingencies (Additional Information) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Legal Proceedings [Line Items]
Cash held as collateral	$ 13,000
Net Payment on Derivatives	1,600
Other Liabilities [Member]
Legal Proceedings [Line Items]
Increase (decrease) in fair value of swap agreement classified as other liabilities	(60)	(6,600)
Commercial Loan [Member]
Legal Proceedings [Line Items]
Notional amount of derivative	8,100
Interest Rate Swap [Member]
Legal Proceedings [Line Items]
Notional amount of derivative	43,000	43,000
Fair value derivative liability	11,100	11,200
Net Payment on Derivatives		839
Expected Net Payment on Derivatives		1,600
Forward Commitments To Sell Residential Mortgage Loans [Member]
Legal Proceedings [Line Items]
Notional amount of derivative	7,800
Gain on commitments to sell mortgages	$ 37