Schedule of Unobservable Inputs Used in Level 3 Valuation of Mortgage Loans Held for Investment (Details) - Mortgage Held for Investment - Level 3	9 Months Ended	12 Months Ended
Sep. 30, 2015	Dec. 31, 2014
Minimum
Fair Value Inputs Assets Quantitative Information [Line Items]
Discount rate	2.00%	3.60%
Conditional refinance rate	12.80%	12.40%
Default rate	0.00%	0.00%
Loss severity	0.00%	10.20%
Maximum
Fair Value Inputs Assets Quantitative Information [Line Items]
Discount rate	3.30%	3.90%
Conditional refinance rate	21.10%	19.30%
Default rate	2.60%	1.50%
Loss severity	25.60%	19.90%
Weighted Average
Fair Value Inputs Assets Quantitative Information [Line Items]
Discount rate	3.10%	3.80%
Conditional refinance rate	16.40%	15.30%
Default rate	0.60%	0.40%
Loss severity	15.20%	13.80%

Fair value inputs refinance rate.

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

+ Details

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- Definition

Loss, including interest and principal, incurred on a defaulted security, expressed as a percentage of the original principal balance, used as an input to measure fair value.

+ References

+ Details

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- Definition

Percentage of likelihood a loan will not be repaid and instead default, used as an input to measure fair value.

+ References

+ Details

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- Details

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