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Commercial Mortgage Residual Interests (Tables) | 12 Months Ended
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Dec. 31, 2016
Commercial Mortgage Residual Interests [Abstract] |
Schedule of Amounts Recognized as Unrealized Gains and/or Losses Recorded as Other Comprehensive Income And Other Than Temporary Valuation Impairments Recorded in Earnings | The following table summarizes the recognition of unrealized gains and/or losses recorded as other comprehensive income as well as other than temporary valuation impairment (dollars in thousands):
| 2016 |  | 2015 |  | 2014
Unrealized gains (losses), net | $ | (182 | ) |  | $ | (585 | ) |  | $ | 875 |
Other than temporary valuation impairment | 6,830 |  |  | 531 |  |  | 256 |
Retained Interest, Fair Value Disclosure, Significant Assumptions | The following table summarizes the key assumptions used in determining the value of the Residuals as of December 31 (dollars in thousands):
| 2016 |  | 2015
Discount rate | 20 | % |  | 20 | %
Average life equivalent CPR(1) speeds range | 0.87% to 21.56% CPR |  |  | 0.87% to 21.73% CPR |
Foreclosures: |  |  |
Frequency curve default model | 0% - 1.33% range |  |  | 0.72% - 1.57% range |
Loss severity of loans in foreclosure | 20 | % |  | 20 | %
Yield: |  |  |
LIBOR | Forward 3-month curve |  |  | Forward 3-month curve |
Prime | Forward curve |  |  | Forward curve |
Fair value at December 31 | $ | 36 |  |  | $ | 11,115 |
(1) | Conditional prepayment rate

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- Definition Schedule Of Amounts Recognized As Unrealized Gains And Or Losses Recorded As Other Comprehensive Income And Other Than Temporary Valuation Impairments Recorded In Earnings [Table Text Block] + References No definition available. + Details
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- Definition Tabular disclosure of quantitative information about the inputs used in the fair value measurement of assets. This disclosure may include, but is not limited to, the fair value of the asset, valuation technique used to measure fair value, the inputs used to measure fair value, the ranges of the inputs, and the weighted averages of the inputs. + 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=66048111&loc=d3e19207-110258 + Details
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