Other Loans Held for Sale (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans transferred to other loans held for sale			$ 87,189,000	$ 189,029,000
Loan charge offs	(47,916,000)	(110,489,000)	(115,035,000)	(215,978,000)
Before Transfer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans transferred to other loans held for sale			112,200,000	264,000,000
Loan charge offs			25,000,000	74,900,000
New Cost Basis After Transfer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans transferred to other loans held for sale, based on fair value			$ 87,200,000	$ 189,100,000