Derivatives (Summary Of Types Of Derivatives, Separately By Assets And Liabilities And Fair Value Of Derivatives) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Total asset derivatives	$ 7,955	$ 1,060
Total liability derivatives	6,509	361
Other [Member]
Total asset derivatives	7,955	1,060
Other Liabilities [Member]
Total liability derivatives	6,509	361
Interest Rate Swap [Member] | Other [Member]
Total asset derivatives	6,203
Interest Rate Swap [Member] | Other Liabilities [Member]
Total liability derivatives	6,416
Interest Rate Contracts [Member] | Rate Lock Commitments [Member] | Other [Member]
Total asset derivatives	1,752	306
Interest Rate Contracts [Member] | Rate Lock Commitments [Member] | Other Liabilities [Member]
Total liability derivatives	3	170
Interest Rate Contracts [Member] | Forward Sales Commitments [Member] | Other [Member]
Total asset derivatives		754
Interest Rate Contracts [Member] | Forward Sales Commitments [Member] | Other Liabilities [Member]
Total liability derivatives	$ 90	$ 191