Commitments and Contingencies (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Dec. 31, 2007
Claims to Repurchase Securitized Loans [Member]
Loss Contingencies [Line Items]
Principal Amount Outstanding on Loans Securitized or Asset-backed Financing Arrangement			$ 43,100.0
Severance Agreements [Member]
Loss Contingencies [Line Items]
Contractual Obligation, Due in First Year	$ 0.1	$ 0.1
Contractual Obligation	0.4	0.4
Royalty Agreements [Member]
Loss Contingencies [Line Items]
Contractual Obligation, Due in First Year	0.5	0.5
Royalty Expense	0.1	0.2
Accrued Royalties	$ 0.4	$ 0.4