Fair Value (Schedule Of Assets With Fair Value Changes On Nonrecurring Basis) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014 HTM Securities Adjusted For OTTI [Member]	Mar. 31, 2013 HTM Securities Adjusted For OTTI [Member]	Mar. 31, 2014 Impaired Loans [Member]	Mar. 31, 2013 Impaired Loans [Member]	Mar. 31, 2014 Private Equity Investments [Member]	Mar. 31, 2013 Private Equity Investments [Member]	Mar. 31, 2014 Other Real Estate Owned [Member]	Mar. 31, 2013 Other Real Estate Owned [Member]	Mar. 31, 2014 Level 1 [Member]	Dec. 31, 2013 Level 1 [Member]	Mar. 31, 2014 Level 1 [Member] HTM Securities Adjusted For OTTI [Member]	Dec. 31, 2013 Level 1 [Member] HTM Securities Adjusted For OTTI [Member]	Mar. 31, 2014 Level 1 [Member] Impaired Loans [Member]	Dec. 31, 2013 Level 1 [Member] Impaired Loans [Member]	Mar. 31, 2014 Level 1 [Member] Private Equity Investments [Member]	Dec. 31, 2013 Level 1 [Member] Private Equity Investments [Member]	Mar. 31, 2014 Level 1 [Member] Other Real Estate Owned [Member]	Dec. 31, 2013 Level 1 [Member] Other Real Estate Owned [Member]	Mar. 31, 2014 Level 2 [Member]	Dec. 31, 2013 Level 2 [Member]	Mar. 31, 2014 Level 2 [Member] HTM Securities Adjusted For OTTI [Member]	Dec. 31, 2013 Level 2 [Member] HTM Securities Adjusted For OTTI [Member]	Mar. 31, 2014 Level 2 [Member] Impaired Loans [Member]	Dec. 31, 2013 Level 2 [Member] Impaired Loans [Member]	Mar. 31, 2014 Level 2 [Member] Private Equity Investments [Member]	Dec. 31, 2013 Level 2 [Member] Private Equity Investments [Member]	Mar. 31, 2014 Level 2 [Member] Other Real Estate Owned [Member]	Dec. 31, 2013 Level 2 [Member] Other Real Estate Owned [Member]	Mar. 31, 2014 Level 3 [Member]	Dec. 31, 2013 Level 3 [Member]	Mar. 31, 2014 Level 3 [Member] HTM Securities Adjusted For OTTI [Member]	Dec. 31, 2013 Level 3 [Member] HTM Securities Adjusted For OTTI [Member]	Mar. 31, 2014 Level 3 [Member] Impaired Loans [Member]	Dec. 31, 2013 Level 3 [Member] Impaired Loans [Member]	Mar. 31, 2014 Level 3 [Member] Private Equity Investments [Member]	Dec. 31, 2013 Level 3 [Member] Private Equity Investments [Member]	Mar. 31, 2014 Level 3 [Member] Other Real Estate Owned [Member]	Dec. 31, 2013 Level 3 [Member] Other Real Estate Owned [Member]	Mar. 31, 2014 Estimated Fair Value [Member]	Dec. 31, 2013 Estimated Fair Value [Member]	Mar. 31, 2014 Estimated Fair Value [Member] HTM Securities Adjusted For OTTI [Member]	Dec. 31, 2013 Estimated Fair Value [Member] HTM Securities Adjusted For OTTI [Member]	Mar. 31, 2014 Estimated Fair Value [Member] Impaired Loans [Member]	Dec. 31, 2013 Estimated Fair Value [Member] Impaired Loans [Member]	Mar. 31, 2014 Estimated Fair Value [Member] Private Equity Investments [Member]	Dec. 31, 2013 Estimated Fair Value [Member] Private Equity Investments [Member]	Mar. 31, 2014 Estimated Fair Value [Member] Other Real Estate Owned [Member]	Dec. 31, 2013 Estimated Fair Value [Member] Other Real Estate Owned [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Principal amount of other real estate owned property sold	$ 10,000,000	$ 22,000,000
Fair value of assets measured on nonrecurring basis											0	0	0	0	0	0	0	0	0	0	35,663,000	36,449,000	0	0	21,943,000	11,765,000	0	0	13,720,000	24,684,000	71,000	21,753,000	71,000	8,483,000	0	0	0	13,270,000	0	0	35,734,000	58,202,000	71,000	8,483,000	21,943,000	11,765,000	0	13,270,000	13,720,000	24,684,000
Gains (losses) from fair value changes	$ (4,438,000)	$ (6,797,000)	$ (27,000)	$ (403,000)	$ (2,177,000)	$ (883,000)	$ 0	$ (820,000)	$ (2,234,000)	$ (4,691,000)