Loan Securitization (Carrying Values And Classification Of The Restricted Assets And Liabilities Relating To The Securitization Activities) (Details) (USD $)	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2011	Dec. 31, 2010
Restricted Assets And Liabilities Relating To The Securitization [Line Items]
Cash collateral accounts	$ 7,100,000
Interest-bearing deposits with banks - restricted for securitization investors	529,418,000	272,592,000	35,630,000
Allowance for loan losses	(111,023,000)	(110,381,000)	(115,049,000)	(113,903,000)
Net loans - restricted for securitization investors	156,132,000	411,532,000	647,793,000
Secured borrowings - owed to securitization investors	428,000,000	600,000,000	600,000,000
Restricted Assets And Liabilities [Member]
Restricted Assets And Liabilities Relating To The Securitization [Line Items]
Cash collateral accounts	2,017,000	4,427,000	1,759,000
Collections and interest funding accounts	527,401,000	268,165,000	33,871,000
Interest-bearing deposits with banks - restricted for securitization investors	529,418,000	272,592,000	35,630,000
Loans, net of unearned income - restricted for securitization investors	156,793,000	412,988,000	649,958,000
Allowance for loan losses	(661,000)	(1,456,000)	(2,165,000)
Net loans - restricted for securitization investors	156,132,000	411,532,000	647,793,000
Other assets	2,045,000	2,319,000	2,457,000
Total assets	687,595,000	686,443,000	685,880,000
Secured borrowings - owed to securitization investors	600,000,000	600,000,000	600,000,000
Other liabilities	1,187,000	2,821,000	4,445,000
Total liabilities	$ 601,187,000	$ 602,821,000	$ 604,445,000