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Fair Values of Financial Instruments (Details 1) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | |||||||||||||||||||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2012
Cusip One [Member]
Numbers
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Dec. 31, 2012
Cusip Two [Member]
Numbers
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Dec. 31, 2012
Cusip Three [Member]
Numbers
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Dec. 31, 2012
Cusip Four [Member]
Numbers
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Dec. 31, 2012
Collateralized Debt Obligations [Member]
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Dec. 31, 2011
Collateralized Debt Obligations [Member]
|
Dec. 31, 2012
Collateralized Debt Obligations [Member]
Cusip One [Member]
|
Dec. 31, 2012
Collateralized Debt Obligations [Member]
Cusip Two [Member]
|
Dec. 31, 2012
Collateralized Debt Obligations [Member]
Cusip Three [Member]
|
Dec. 31, 2012
Collateralized Debt Obligations [Member]
Cusip Four [Member]
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| Cusip | 74043CAC1 | 74042TAJ0 | 01449TAB9 | 01450NAC6 | ||||||||||||||||
| Deal name | PreTSL XXIV | PreTSL XXVII | Alesco IX | Alesco XVII | ||||||||||||||||
| Class | B-1 | C-1 | A-2A | B | ||||||||||||||||
| Book value | $ 183,945 | $ 183,131 | $ 5,208 | $ 5,214 | $ 1,256,972 | $ 1,296,077 | $ 1,302,536 | $ 1,351,903 | ||||||||||||
| Fair value | 187,475 | 186,962 | 1,392 | 1,361 | 249,184 | 246,509 | 568,650 | 327,289 | ||||||||||||
| Unrealized gains/(losses) | (3,866) | (3,858) | (3,816) | (3,853) | (1,007,788) | (1,049,569) | (733,886) | (1,024,614) | ||||||||||||
| Lowest credit rating assigned | Ca | C | Ba2 | C | ||||||||||||||||
| Number of performing banks | 48 | 27 | 53 | 44 | ||||||||||||||||
| Number of performing insurance companies | 13 | 7 | 10 | |||||||||||||||||
| Number of issuers in default | 17 | 9 | 2 | 2 | ||||||||||||||||
| Number of issuers in deferral | 15 | 6 | 11 | 10 | ||||||||||||||||
| Defaults & deferrals as a % of performing collateral | 51.28% | 36.26% | 21.05% | 39.86% | ||||||||||||||||
| Subordination: | ||||||||||||||||||||
| As a % of performing collateral | (7.37%) | (19.48%) | 33.21% | (12.77%) | ||||||||||||||||
| As a % of performing collateral - adjusted for projected future defaults | (14.22%) | (27.93%) | 28.49% | (24.33%) | ||||||||||||||||
| Other-than-temporary impairment model assumptions: | ||||||||||||||||||||
| Year 1 - issuer average | 2.00% | 2.20% | 2.20% | 3.10% | ||||||||||||||||
| Year 2 - issuer average | 2.00% | 2.20% | 2.20% | 3.10% | ||||||||||||||||
| Year 3 - issuer average | 2.00% | 2.20% | 2.20% | 3.10% | ||||||||||||||||
| > 3 Years - issuer average | [1] | [1] | [1] | [1] | ||||||||||||||||
| Discount rate - 3 month Libor, plus implicit yield spread at purchase | 1.48% | 1.23% | 1.27% | 1.44% | ||||||||||||||||
| Recovery assumptions | [2] | [2] | [2] | [2] | ||||||||||||||||
| Prepayments | 0.00% | 0.00% | 0.00% | 0.00% | ||||||||||||||||
| Other-than-temporary impairment | $ 271 | $ 265 | $ 41,100 | $ 132,000 | $ 36,600 | $ 61,950 | ||||||||||||||
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