Fair Value Measurements (Reconciliation Of Residuals) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Fair Value Disclosures [Abstract]
Balance at beginning of period	$ 15,915
Total gains (losses) - realized/unrealized [Abstract]
Included in earnings	(1,024)
Included in other comprehensive income	(246)
Interest revenue on Residuals	(3,105)	(3,460)	(4,252)
Cash received from Residuals	(2,451)
Purchases, Sales, Issuances, and settlements, net	0
Transfers in and/or out of Level 3	0
Balance at end of period	15,299	15,915
Changes in gain (losses) included in earnings attributable to a change in unrealized gains (losses) relating ot assets still held at the end of period	$ (1,092)

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This item represents the amount of the total change in unrealized (holding) gains or losses for the period which are included in the statement of income (or changes in net assets) in other income. Such unrealized (holding) gains or losses relate to those assets still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3).

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This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings or resulted in a change in net asset value.

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This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in other comprehensive income (a separate component of shareholders' equity).

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This element represents purchases, sales, issuances, and settlements (net) which have taken place during the period in relation to assets measured at fair value on a recurring basis using unobservable inputs (Level 3).

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This element represents [net] transfers in to and out of assets measured at fair value on a recurring basis using unobservable inputs (Level 3) which have taken place during the period.

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This element represents an asset measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances.

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Reflects the sum of all other revenue and income recognized by the entity in the period not otherwise specified in the income statement.

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The cash inflow from the collection of a retained interest in a receivable securitized via a structured process whereby interests in loans and other receivables are packaged, underwritten, and sold in the form of asset-backed securities, categorized as available-for-sale.

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