Fair Value Accounting (Changes In Level 3 Fair Value Measurements) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012
Investment Securities Available For Sale [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	$ 3,178	$ 6,842
Included in earnings	(264)	(450)
Unrealized gains (losses) included in other comprehensive income	436	(713)
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	(1,000)	(2,000)
Amortization of discount/premium	0	0
Transfers in and/or out of Level 3	0	(501)
Ending balance	2,350	3,178
The amount of total gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to assets still held at September 30,	(264)	(450)
Private Equity Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	30,708	21,418
Included in earnings	(2,963)	8,233
Unrealized gains (losses) included in other comprehensive income	0	0
Purchases	0	1,057
Sales	0	0
Issuances	0	0
Settlements	0	0
Amortization of discount/premium	0	0
Transfers in and/or out of Level 3	0	0
Ending balance	27,745	30,708
The amount of total gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to assets still held at September 30,	(2,963)	8,233
Other Derivative Contracts, Net [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	(2,956)	(7,242)
Included in earnings	(1,600)	(6,304)
Unrealized gains (losses) included in other comprehensive income	0	0
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	1,850	12,441
Amortization of discount/premium	0	0
Transfers in and/or out of Level 3	0	(1,851)
Ending balance	(2,706)	(2,956)
The amount of total gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to assets still held at September 30,	$ (1,600)	$ (6,304)

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Amount of gain (loss) recognized in the income statement for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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-Name Accounting Standards Codification

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Amount of gain (loss) recognized in other comprehensive income (loss) for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of issuances of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of increase (decrease) of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of sale of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy.

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Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of accretion (amortization) of purchase discount (premium) on nonoperating securities.

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