Fair Value Measurements (Reconciliation Of Retained Interest) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010
Fair Value Measurements [Abstract]
Beginning balance	$ 10,283	$ 9,881
Accretion of interest income	424	402
Ending balance	$ 10,707	$ 10,283

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the interests continued to be held by a transferor (retained or residual interest) after transferring financial assets to a third party.

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