Finance Receivables And Allowance For Credit Losses (Narrative) (Details) (USD $)	3 Months Ended	9 Months Ended					3 Months Ended	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010	Sep. 30, 2011 Nonaccrual Loan [Member]	Dec. 31, 2010 Nonaccrual Loan [Member]	Sep. 30, 2011 Commercial [Member]	Sep. 30, 2011 Commercial [Member]	Dec. 31, 2010 Commercial [Member]	Jun. 30, 2010 Commercial [Member]	Sep. 30, 2011 Commercial Real Estate [Member]	Dec. 31, 2010 Commercial Real Estate [Member]
Loans placed on nonaccrual when past due, number days		90
Commercial loan concentrated	$ 0	$ 0
Percentage on portfolio	10.00%	10.00%
Average balance of impaired loans		66,400,000	50,100,000				77,851,000	66,429,000
Interest income		0
Purchased loans	6,300,000
Loans modified in a troubled debt restructuring					9,400,000	4,800,000			3,800,000	3,900,000	5,500,000	1,000,000
Allowance for loan losses	1,188,000	1,188,000		1,600,000	2,400,000
Loans on non accrual status		250,000
Maturity of loans in days, minimum		120
Maturity of loans in days, maximum		180
Carrying value of credit impaired loans	166,400,000	166,400,000
Accretable difference expected to be accreted into future earnings	25,500,000	25,500,000
Accretion recorded as loan interest income		10,000,000
Reversal of allowances for loan losses		0
Purchased impaired loans without reasonable cash flow estimate	1,200,000	1,200,000
Loan participations	217,900,000	217,900,000
Loan participations sold	126,600,000	126,600,000
Loan participations retained	$ 91,300,000	$ 91,300,000