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Fair Value (Details 1) (USD $) In Thousands, unless otherwise specified | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2013 | Dec. 31, 2012
Book value | $ 189,279 |  | $ 183,945
Fair value | 186,307 |  | 187,475
Unrealized gains/(losses) | (6,476) |  | (3,866)
Other-than-temporary impairment model assumptions: |  |  |
Other-than-temporary impairment | 271 |  | 271
Cusip One [Member] |  |  |
Cusip | 74043CAC1 |  |
Deal name | PreTSL XXIV |  |
Class | B-1 |  |
Book value | 1,257 |  |
Fair value | 430 |  |
Unrealized gains/(losses) | (827) |  |
Lowest credit rating assigned | CC |  |
Number of performing banks | 50 |  |
Number of performing insurance companies | 13 |  |
Number of issuers in default | 17 |  |
Number of issuers in deferral | 13 |  |
Defaults & deferrals as a % of performing collateral | 49.14% |  |
Subordination: |  |  |
As a % of performing collateral | (2.52%) |  |
As a % of performing collateral - adjusted for projected future defaults | (10.47%) |  |
Other-than-temporary impairment model assumptions: |  |  |
Year 1 - issuer average | 2.40% |  |
Year 2 - issuer average | 2.40% |  |
Year 3 - issuer average | 2.40% |  |
> 3 Years - issuer average |  | [1] |
Discount rate - 3 month Libor, plus implicit yield spread at purchase | 1.48% |  |
Recovery assumptions |  | [2] |
Prepayments | 0.00% |  |
Other-than-temporary impairment | 41 |  |
Cusip Two [Member] |  |  |
Cusip | 74042TAJ0 |  |
Deal name | PreTSL XXVII |  |
Class | C-1 |  |
Book value | 1,296 |  |
Fair value | 385 |  |
Unrealized gains/(losses) | (911) |  |
Lowest credit rating assigned | C |  |
Number of performing banks | 28 |  |
Number of performing insurance companies | 7 |  |
Number of issuers in default | 9 |  |
Number of issuers in deferral | 5 |  |
Defaults & deferrals as a % of performing collateral | 33.47% |  |
Subordination: |  |  |
As a % of performing collateral | (9.86%) |  |
As a % of performing collateral - adjusted for projected future defaults | (18.00%) |  |
Other-than-temporary impairment model assumptions: |  |  |
Year 1 - issuer average | 2.30% |  |
Year 2 - issuer average | 2.30% |  |
Year 3 - issuer average | 2.30% |  |
> 3 Years - issuer average |  | [1] |
Discount rate - 3 month Libor, plus implicit yield spread at purchase | 1.23% |  |
Recovery assumptions |  | [2] |
Prepayments | 0.00% |  |
Other-than-temporary impairment | 132 |  |
Cusip Three [Member] |  |  |
Cusip | 01449TAB9 |  |
Deal name | Alesco IX |  |
Class | A-2A |  |
Book value | 1,303 |  |
Fair value | 721 |  |
Unrealized gains/(losses) | (582) |  |
Lowest credit rating assigned | BB |  |
Number of performing banks | 53 |  |
Number of performing insurance companies | 10 |  |
Number of issuers in default | 1 |  |
Number of issuers in deferral | 12 |  |
Defaults & deferrals as a % of performing collateral | 19.11% |  |
Subordination: |  |  |
As a % of performing collateral | 35.32% |  |
As a % of performing collateral - adjusted for projected future defaults | 30.97% |  |
Other-than-temporary impairment model assumptions: |  |  |
Year 1 - issuer average | 2.10% |  |
Year 2 - issuer average | 2.10% |  |
Year 3 - issuer average | 2.10% |  |
> 3 Years - issuer average |  | [1] |
Discount rate - 3 month Libor, plus implicit yield spread at purchase | 1.27% |  |
Recovery assumptions |  | [2] |
Prepayments | 0.00% |  |
Other-than-temporary impairment | 36 |  |
Cusip Four [Member] |  |  |
Cusip | 01450NAC6 |  |
Deal name | Alesco XVII |  |
Class | B |  |
Book value | 1,352 |  |
Fair value | 466 |  |
Unrealized gains/(losses) | (886) |  |
Lowest credit rating assigned | CC |  |
Number of performing banks | 45 |  |
Number of performing insurance companies | 0 |  |
Number of issuers in default | 2 |  |
Number of issuers in deferral | 9 |  |
Defaults & deferrals as a % of performing collateral | 30.51% |  |
Subordination: |  |  |
As a % of performing collateral | 16.11% |  |
As a % of performing collateral - adjusted for projected future defaults | 9.02% |  |
Other-than-temporary impairment model assumptions: |  |  |
Year 1 - issuer average | 2.60% |  |
Year 2 - issuer average | 2.60% |  |
Year 3 - issuer average | 2.60% |  |
> 3 Years - issuer average |  | [1] |
Discount rate - 3 month Libor, plus implicit yield spread at purchase | 1.44% |  |
Recovery assumptions |  | [2] |
Prepayments | 0.00% |  |
Other-than-temporary impairment | $ 62 |  |
[1] | Default rates > 3 years are evaluated on a issuer by issuer basis and range from 0.25% to 5.00%.
[2] | Recovery assumptions are evaluated on a issuer by issuer basis and range from 0% to 15% with a five year lag.

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