Fair Value Accounting (Changes In Level 3 Fair Value Measurements) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014	Sep. 30, 2013
Investment Securities Available for Sale [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 1,866		$ 3,454		$ 2,350	$ 3,178
Included in earnings	0	[1]	0	[1]	(88)	0
Unrealized gains (losses) included in other comprehensive income	(81)		125		63	401
Purchases	0		0		0	0
Sales	0		0		0	0
Issuances	0		0		0	0
Settlements	0		0		(540)	0
Amortization of discount/premium	0		0		0	0
Transfers in and/or out of Level 3	0		0		0	0
Ending balance	1,785		3,579		1,785	3,579
Total net gains (losses) for the nine months included in earnings attributable to the change in unrealized gains (losses) relating to assets and liabilities still held at September 30,	0		0		(88)	0
Private Equity Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	27,376		29,568		27,745	30,708
Included in earnings	(144)	[1]	284	[1]	(513)	(856)
Unrealized gains (losses) included in other comprehensive income	0		0		0	0
Purchases	0		0			0
Sales	0		0		0	0
Issuances	0		0		0	0
Settlements	0		0		0	0
Amortization of discount/premium	0		0		0	0
Transfers in and/or out of Level 3	0		0		0	0
Ending balance	27,232		29,852		27,232	29,852
Total net gains (losses) for the nine months included in earnings attributable to the change in unrealized gains (losses) relating to assets and liabilities still held at September 30,	(144)		284		(513)	(856)
Other Derivative Contracts, Net [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	(2,438)		(2,977)		(2,706)	(2,956)
Included in earnings	(1,979)	[1]	0	[1]	(2,731)	(801)
Unrealized gains (losses) included in other comprehensive income	0		0		0	0
Purchases	0		0		0	0
Sales	0		0		0	0
Issuances	0		0		0	0
Settlements	396		472		1,416	1,252
Amortization of discount/premium	0		0		0	0
Transfers in and/or out of Level 3	0		0		0	0
Ending balance	(4,021)		(2,505)		(4,021)	(2,505)
Total net gains (losses) for the nine months included in earnings attributable to the change in unrealized gains (losses) relating to assets and liabilities still held at September 30,	$ (1,979)		$ 0		$ (2,731)	$ (801)

[1] Included in earnings as a component of non-interest income (expense).