Consumer Loans, Credit Quality Information And Allowances And Liabilities For Estimated Losses On Consumer Loans (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2012 D	Dec. 31, 2011	Mar. 31, 2011	Dec. 31, 2010
Consumer Loans, Credit Quality Information And Allowances And Liabilities For Losses On Consumer Loans [Line Items]
Uncollectible period for classifying consumer loan as nonperforming (in days)	60
Allowance deducted from the carrying value of consumer loans	$ 58,713,000	$ 63,072,000	$ 35,010,000	$ 38,953,000
Active consumer loans owned by third-party lenders	44,500,000	59,400,000	38,800,000
Accrual for losses on consumer loan guaranty obligations	$ 2,000,000	$ 3,100,000	$ 1,700,000
Maximum [Member]
Consumer Loans, Credit Quality Information And Allowances And Liabilities For Losses On Consumer Loans [Line Items]
Nonperforming loans expiry period (in days)	59
Guarantee obligation expiry period (in days)	90
Minimum [Member]
Consumer Loans, Credit Quality Information And Allowances And Liabilities For Losses On Consumer Loans [Line Items]
Nonperforming loans expiry period (in days)	1