Description Of Business (Schedule Of Loan Program Enrollment Options) (Details) (USD $)	17 Months Ended	19 Months Ended
	May 31, 2011	Dec. 31, 2012
Option A [Member]
Description Of Business [Line Items]
One-time enrollment fee in program	$ 9,850	$ 9,850
Option B [Member]
Description Of Business [Line Items]
One-time enrollment fee in program	$ 1,950
Percentage of enrollment fee of first accelerated dealer holdback payment	50.00%	50.00%