Fair Value (Schedule of Quantitative Information about Level 3 Fair Value Measurements) (Details) (USD $)
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3 Months Ended | |||
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Mar. 31, 2013
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Non-Agency RMBS [Member] | Level 3 [Member]
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Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||||
Fair Value | 273,639,784 | [1] | ||
Alternative - A [Member] | Level 3 [Member]
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Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||||
Fair Value | 97,364,228 | [1] | ||
Alternative - A [Member] | Minimum [Member] | Market Approach Valuation Technique [Member]
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Unobservable Input | ||||
Constant voluntary prepayment | 1.50% | [1] | ||
Constant default rate | 1.40% | [1] | ||
Loss severity | 2.50% | [1] | ||
Delinquency | 4.00% | [1] | ||
Alternative - A [Member] | Maximum [Member] | Market Approach Valuation Technique [Member]
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Unobservable Input | ||||
Constant voluntary prepayment | 12.00% | [1] | ||
Constant default rate | 10.60% | [1] | ||
Loss severity | 70.80% | [1] | ||
Delinquency | 30.10% | [1] | ||
Alternative - A [Member] | Weighted Average [Member] | Market Approach Valuation Technique [Member]
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Unobservable Input | ||||
Constant voluntary prepayment | 7.00% | [1] | ||
Constant default rate | 6.70% | [1] | ||
Loss severity | 45.50% | [1] | ||
Delinquency | 16.80% | [1] | ||
Pay Option Adjustable Rate [Member] | Level 3 [Member]
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Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||||
Fair Value | 31,608,908 | [1] | ||
Pay Option Adjustable Rate [Member] | Minimum [Member] | Market Approach Valuation Technique [Member]
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Unobservable Input | ||||
Constant voluntary prepayment | 1.00% | [1] | ||
Constant default rate | 3.30% | [1] | ||
Loss severity | 3.40% | [1] | ||
Delinquency | 4.10% | [1] | ||
Pay Option Adjustable Rate [Member] | Maximum [Member] | Market Approach Valuation Technique [Member]
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Unobservable Input | ||||
Constant voluntary prepayment | 20.30% | [1] | ||
Constant default rate | 14.00% | [1] | ||
Loss severity | 72.70% | [1] | ||
Delinquency | 32.50% | [1] | ||
Pay Option Adjustable Rate [Member] | Weighted Average [Member] | Market Approach Valuation Technique [Member]
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Unobservable Input | ||||
Constant voluntary prepayment | 7.80% | [1] | ||
Constant default rate | 6.30% | [1] | ||
Loss severity | 55.50% | [1] | ||
Delinquency | 14.60% | [1] | ||
Prime [Member] | Level 3 [Member]
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Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||||
Fair Value | 110,237,355 | [1] | ||
Prime [Member] | Minimum [Member] | Market Approach Valuation Technique [Member]
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Unobservable Input | ||||
Constant voluntary prepayment | 1.20% | [1] | ||
Constant default rate | 2.40% | [1] | ||
Loss severity | 5.50% | [1] | ||
Delinquency | 2.80% | [1] | ||
Prime [Member] | Maximum [Member] | Market Approach Valuation Technique [Member]
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Unobservable Input | ||||
Constant voluntary prepayment | 20.00% | [1] | ||
Constant default rate | 10.30% | [1] | ||
Loss severity | 63.00% | [1] | ||
Delinquency | 27.80% | [1] | ||
Prime [Member] | Weighted Average [Member] | Market Approach Valuation Technique [Member]
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Unobservable Input | ||||
Constant voluntary prepayment | 9.70% | [1] | ||
Constant default rate | 6.40% | [1] | ||
Loss severity | 43.70% | [1] | ||
Delinquency | 15.00% | [1] | ||
Subprime [Member] | Level 3 [Member]
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Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||||
Fair Value | 34,429,293 | [1] | ||
Subprime [Member] | Minimum [Member] | Market Approach Valuation Technique [Member]
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Unobservable Input | ||||
Constant voluntary prepayment | 0.90% | [1] | ||
Constant default rate | 3.40% | [1] | ||
Loss severity | 10.90% | [1] | ||
Delinquency | 4.40% | [1] | ||
Subprime [Member] | Maximum [Member] | Market Approach Valuation Technique [Member]
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Unobservable Input | ||||
Constant voluntary prepayment | 10.20% | [1] | ||
Constant default rate | 14.70% | [1] | ||
Loss severity | 81.00% | [1] | ||
Delinquency | 29.10% | [1] | ||
Subprime [Member] | Weighted Average [Member] | Market Approach Valuation Technique [Member]
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||||
Unobservable Input | ||||
Constant voluntary prepayment | 3.60% | [1] | ||
Constant default rate | 6.30% | [1] | ||
Loss severity | 56.80% | [1] | ||
Delinquency | 13.90% | [1] | ||
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