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Valuation (Schedule Of Significant Unobservable Inputs, Qualitative Information) (Details) (USD $)
In Thousands, unless otherwise specified |
9 Months Ended | 9 Months Ended | 9 Months Ended | 9 Months Ended | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Sep. 30, 2012
|
Dec. 31, 2011
|
Sep. 30, 2012
Level 3 [Member]
|
Dec. 31, 2011
Level 3 [Member]
|
Sep. 30, 2012
Level 3 [Member]
Income Approach Valuation Technique [Member]
Private Label Residential Mortgage Backed Securities And Securitized Debt [Member]
|
Sep. 30, 2012
Level 3 [Member]
Income Approach Valuation Technique [Member]
Private Label Residential Mortgage Backed Securities And Securitized Debt [Member]
Minimum [Member]
|
Sep. 30, 2012
Level 3 [Member]
Income Approach Valuation Technique [Member]
Private Label Residential Mortgage Backed Securities And Securitized Debt [Member]
Maximum [Member]
|
Sep. 30, 2012
Level 3 [Member]
Income Approach Valuation Technique [Member]
Private Label Residential Mortgage Backed Securities And Securitized Debt [Member]
Weighted Average [Member]
|
Sep. 30, 2012
Level 3 [Member]
Income Approach Valuation Technique [Member]
Credit Default Swaps On Asset Backed Securities [Member]
|
Sep. 30, 2012
Level 3 [Member]
Income Approach Valuation Technique [Member]
Credit Default Swaps On Asset Backed Securities [Member]
Minimum [Member]
|
Sep. 30, 2012
Level 3 [Member]
Income Approach Valuation Technique [Member]
Credit Default Swaps On Asset Backed Securities [Member]
Maximum [Member]
|
Sep. 30, 2012
Level 3 [Member]
Income Approach Valuation Technique [Member]
Credit Default Swaps On Asset Backed Securities [Member]
Weighted Average [Member]
|
Sep. 30, 2012
Level 3 [Member]
Income Approach Valuation Technique [Member]
Private Label Commercial Mortgage-Backed Securities And Commercial Mortgage Loans [Member]
|
Sep. 30, 2012
Level 3 [Member]
Income Approach Valuation Technique [Member]
Private Label Commercial Mortgage-Backed Securities And Commercial Mortgage Loans [Member]
Minimum [Member]
|
Sep. 30, 2012
Level 3 [Member]
Income Approach Valuation Technique [Member]
Private Label Commercial Mortgage-Backed Securities And Commercial Mortgage Loans [Member]
Maximum [Member]
|
Sep. 30, 2012
Level 3 [Member]
Income Approach Valuation Technique [Member]
Private Label Commercial Mortgage-Backed Securities And Commercial Mortgage Loans [Member]
Weighted Average [Member]
|
Sep. 30, 2012
Level 3 [Member]
Income Approach Valuation Technique [Member]
Agency Interest Only Residential Mortgage-Backed Securities [Member]
|
Sep. 30, 2012
Level 3 [Member]
Income Approach Valuation Technique [Member]
Agency Interest Only Residential Mortgage-Backed Securities [Member]
Minimum [Member]
|
Sep. 30, 2012
Level 3 [Member]
Income Approach Valuation Technique [Member]
Agency Interest Only Residential Mortgage-Backed Securities [Member]
Maximum [Member]
|
Sep. 30, 2012
Level 3 [Member]
Income Approach Valuation Technique [Member]
Agency Interest Only Residential Mortgage-Backed Securities [Member]
Weighted Average [Member]
|
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||||||||||||||||||||||||||||
| Fair value | $ 1,238,766 | $ 1,331,104 | $ 547,058 | $ 504,861 | $ 456,486 | [1] | $ 31,460 | $ 53,846 | $ 3,827 | |||||||||||||||||||
| Yield | 2.50% | 56.30% | 9.40% | 0.80% | 13.20% | 7.90% | ||||||||||||||||||||||
| Projected Collateral Prepayments | 0.60% | 47.00% | 17.70% | 5.60% | 37.10% | 15.20% | 84.00% | 96.20% | 89.30% | |||||||||||||||||||
| Projected Collateral Losses | 3.70% | 87.50% | 35.00% | 25.00% | 62.80% | 43.10% | 0.00% | 40.10% | 1.80% | |||||||||||||||||||
| Projected Collateral Recoveries | 0.00% | 39.50% | 19.70% | 10.00% | 39.30% | 18.90% | 0.00% | 23.60% | 2.30% | |||||||||||||||||||
| Projected Collateral Scheduled Amortization | 3.50% | 90.30% | 27.60% | 8.00% | 37.10% | 22.80% | 60.00% | 100.00% | 95.90% | 3.80% | 16.00% | 10.70% | ||||||||||||||||
| Total Outstanding Collateral | 100.00% | 100.00% | 100.00% | 100.00% | ||||||||||||||||||||||||
| LIBOR OAS | 5.26% | [2] | 16.62% | [2] | 10.55% | [2] | ||||||||||||||||||||||
| Securitized debt | $ 1,439 | $ 0 | ||||||||||||||||||||||||||
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