Summary of Significant Accounting Policies (Details Textual)	9 Months Ended
	Sep. 30, 2012
Summary of Significant Accounting Policies (Textual) [Abstract]
Finance receivable charged-off	360 days past due or earlier
Description of internal risk ratings used to calculate provision for credit losses for subsidiary	reserve of 50% of the outstanding amount greater than 90 days plus 25% of the amount outstanding from 1 to 89 days
Percentage of receivable reserved for leases outstanding more than 90 days	50.00%
Percentage of receivable reserved for leases outstanding less than 89 days	25.00%