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Description Of Business (Percentage Of Consumer Loans Assigned Based On Unit Volumes) (Details) | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Portfolio Program [Member] |  |  |
Description Of Business [Line Items] |  |  |
Percentage of new consumer loans | 87.40% | 90.70% | 93.50%
Purchase Program [Member] |  |  |
Description Of Business [Line Items] |  |  |
Percentage of new consumer loans | 12.60% | 9.30% | 6.50%

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- Details
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