Loans (Period-End Balances And Various Asset Quality Attributes By Origination Vintage For The Real Estate Installment Loans) (Details) (Real Estate Installment Class [Member], USD $) In Thousands, unless otherwise specified	Sep. 30, 2012 number	Sep. 30, 2011 number
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	$ 2,400,269	$ 2,141,261
Avg orig FICO	741	732
Avg Refreshed FICO	733	726
Origination Vintage Period Pre2003 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	41,783	62,465
Avg orig FICO	686	691
Avg Refreshed FICO	686	688
Origination Vintage Period 2003 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	122,330	177,168
Avg orig FICO	721	723
Avg Refreshed FICO	730	731
Origination Vintage Period 2004 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	78,439	105,307
Avg orig FICO	707	712
Avg Refreshed FICO	706	710
Origination Vintage Period 2005 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	224,780	287,501
Avg orig FICO	718	721
Avg Refreshed FICO	713	716
Origination Vintage Period 2006 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	244,101	314,204
Avg orig FICO	719	721
Avg Refreshed FICO	703	707
Origination Vintage Period 2007 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	338,306	440,296
Avg orig FICO	728	730
Avg Refreshed FICO	711	715
Origination Vintage Period 2008 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	122,014	166,352
Avg orig FICO	728	736
Avg Refreshed FICO	720	730
Origination Vintage Period 2009 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	67,590	108,874
Avg orig FICO	748	751
Avg Refreshed FICO	744	754
Origination Vintage Period 2010 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	163,618	207,151
Avg orig FICO	745	748
Avg Refreshed FICO	751	752
Origination Vintage Period 2011 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	428,167	271,943
Avg orig FICO	760	756
Avg Refreshed FICO	759	754
Origination Vintage Period 2012 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	$ 569,141
Avg orig FICO	765
Avg Refreshed FICO	761