Debt (Narrative) (Details) (USD $)	3 Months Ended								3 Months Ended				0 Months Ended
	Mar. 31, 2014	Mar. 31, 2014 Revolving Secured Line Of Credit [Member]	Mar. 31, 2014 Warehouse Facilities [Member] loan	Mar. 31, 2014 Warehouse Facility II [Member]		Mar. 31, 2014 Warehouse Facility III [Member]		Mar. 31, 2014 Warehouse Facility III And IV [Member]	Mar. 31, 2014 Warehouse Facility IV [Member]		Mar. 31, 2014 2021 Senior Notes [Member]	Jan. 22, 2014 2021 Senior Notes [Member]	Feb. 21, 2014 2017 Senior Notes [Member]
Debt Instrument [Line Items]
Line of credit facility		$ 235,000,000
Percentage of net book value of loans		80.00%	80.00%
Maximum hedging reserve	1,000,000
Number of warehouse facilities			3
Debt financing amount			475,000,000	325,000,000	[1]	75,000,000	[1]	75,000,000	75,000,000	[1]	300,000,000	300,000,000
Debt maturity date				Dec. 27, 2015	[1],[2]	Sep. 10, 2015	[1],[3]		Apr. 05, 2016	[1],[2]	Feb. 15, 2021
Percentage of collections on contributed loans	6.00%
Monthly servicing fee per financing	6.00%
Senior notes stated interest rate												6.125%	9.125%
Repayment of senior notes	350,000,000												350,000,000
Percentage of principal amount redeemed													104.563%
Loss on extinguishment of debt	(21,800,000)
Debt covenants	$ 1

[1] Financing made available only to a specified subsidiary of the Company.

[2] Represents the revolving maturity date.  The outstanding balance will amortize after the maturity date based on the cash flows of the pledged assets.

[3] Represents the revolving maturity date.  The outstanding balance will amortize after the revolving maturity date and any amounts remaining on September 10, 2017 will be due.