Contingencies And Commitments Contingencies and Commitments (Details) $ in Thousands		6 Months Ended
		Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)
Other Commitments [Line Items]
Derivative Liability	[1]	$ 45,565	$ 66,116
Purchase commitment		100,000
Purchases made in connection with purchase commitments		1,400
Consumer Loan [Member]
Other Commitments [Line Items]
Purchase Commitment, Remaining Minimum Amount Committed		$ 32,300
Debt and equity investments in mortgage originators [Member]
Other Commitments [Line Items]
Number of Investments		3
Corporate Debt [Member]
Other Commitments [Line Items]
Commitments - Debt or Equity Investment		$ 4,000
Corporate Debt [Member] | Due on or before December 31, 2015 [Member]
Other Commitments [Line Items]
Commitments - Debt or Equity Investment		2,000
Corporate Debt [Member] | Due on or before June 12, 2016 [Member]
Other Commitments [Line Items]
Commitments - Debt or Equity Investment		2,000
Non-Exchange Traded Equity Investment in Mortgage Originator
Other Commitments [Line Items]
Purchase commitment		200,000
Guaranty Liabilities		2,500
Loan Purchase Commitments [Member] | Corporate Debt [Member]
Other Commitments [Line Items]
Derivative Liability		800
Loan Purchase Commitments [Member] | Non-Exchange Traded Equity Investment in Mortgage Originator
Other Commitments [Line Items]
Derivative Liability		$ 900

[1] In the Company's Consolidated Statement of Assets, Liabilities, and Equity, all balances associated with repurchase agreements, reverse repurchase agreements, and financial derivatives are presented on a gross basis.