Interim Financial Data By Segment (Narrative) (Details)	3 Months Ended		6 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Standard reconciling rate between actual interest income earned and interest credited			4.50%
Sales Revenue, Segment [Member] | Customer Concentration Risk [Member] | Dealer Services [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	12.40%	10.40%	11.90%	11.20%