Dealer Finance Receivables - GO - Accretable Yield (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Accretable Yield [Roll Forward]
Balance, Beginning of Period	$ 16,849	$ 1,667	$ 8,887	$ 0
Revenue Recognized	(4,331)	(409)	(6,368)	(534)
Additions	27,512	1,333	37,511	3,125
Reclassification from (to) Nonaccretable Yield	0	0	0	0
Balance, End of Period	$ 40,030	$ 2,591	$ 40,030	$ 2,591

The change in the estimate of cash flows expected to be collected, after origination of loans, which results in an increase in accretable yield (for example, if actual cash flows are significantly greater than previously expected). This relates to loans originated through our indirect lending activities, for which it is probable, at origination, that the company will be unable to collect all contractually required payments receivable.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration