Fair Value Accounting (Changes In Level 3 Fair Value Measurements) (Details) (USD $)	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014	Jun. 30, 2013
Investment Securities Available for Sale [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 2,399,000		$ 3,312,000		$ 2,350,000	$ 3,178,000
Included in earnings	0	[1]	0	[1]	(88,000)	0
Unrealized gains (losses) included in other comprehensive income	7,000		142,000		144,000	276,000
Purchases	0		0		0	0
Sales	0		0		0	0
Issuances	0		0		0	0
Settlements	(540,000)		0		(540,000)	0
Amortization of discount/premium	0		0		0	0
Transfers in and/or out of Level 3	0		0		0	0
Ending balance	1,866,000		3,454,000		1,866,000	3,454,000
Total net gains (losses) for the six months included in earnings attributable to the change in unrealized gains (losses) relating to assets and liabilities still held at June 30,	0		0		(88,000)	0
Private Equity Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	27,495,000		30,451,000		27,745,000	30,708,000
Included in earnings	(119,000)	[1]	(883,000)	[1]	(369,000)	(1,140,000)
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	27,376,000		29,568,000		27,376,000	29,568,000
Total net gains (losses) for the six months included in earnings attributable to the change in unrealized gains (losses) relating to assets and liabilities still held at June 30,	(119,000)		(883,000)		(369,000)	(1,140,000)
Other Derivative Contracts, Net [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	(2,525,000)		(2,610,000)		(2,706,000)	(2,956,000)
Included in earnings	(356,000)	[1]	(764,000)	[1]	(752,000)	(801,000)
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	443,000		397,000		1,020,000	780,000
Amortization of discount/premium	0		0		0
Transfers in and/or out of Level 3	0		0		0	0
Ending balance	(2,438,000)		(2,977,000)		(2,438,000)	(2,977,000)
Total net gains (losses) for the six months included in earnings attributable to the change in unrealized gains (losses) relating to assets and liabilities still held at June 30,	$ (356,000)		$ (764,000)		$ (752,000)	$ (801,000)

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