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Derivative Instruments (Gain (Loss) Recognized In The Consolidated Statements Of Operations Related To Its Derivative Instruments) (Details) (USD $)
In Thousands, unless otherwise specified |
0 Months Ended | 3 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
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Jan. 20, 2011
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Mar. 31, 2012
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Mar. 31, 2011
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| Derivative Instruments, Gain (Loss) [Line Items] | |||||||||||
| Amount of gain (loss) recognized on derivatives | $ (27,684) | $ 5,506 | |||||||||
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Net Investment Income [Member] | Interest Rate Futures [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | |||||||||||
| Amount of gain (loss) recognized on derivatives | 1,030 | (654) | |||||||||
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Net Investment Income [Member] | Credit Default Swap [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | |||||||||||
| Amount of gain (loss) recognized on derivatives | 558 | 722 | |||||||||
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Net Foreign Exchange (Losses) Gains [Member] | Foreign Currency Forward Contracts, Underwriting and Non-investment Operations [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | |||||||||||
| Amount of gain (loss) recognized on derivatives | 3,552 | [1] | 7,799 | [1] | |||||||
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Net Foreign Exchange (Losses) Gains [Member] | Foreign Currency Forward Contracts, Investment Operations [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | |||||||||||
| Amount of gain (loss) recognized on derivatives | (4,248) | [2] | (13,400) | [2] | |||||||
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Net Foreign Exchange (Losses) Gains [Member] | Foreign Currency Forward Contracts, Energy And Risk Operations [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | |||||||||||
| Amount of gain (loss) recognized on derivatives | 137 | [3] | (436) | [3] | |||||||
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Other (Loss) Income [Member] | Energy And Weather Contracts [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | |||||||||||
| Amount of gain (loss) recognized on derivatives | (28,713) | 8,500 | |||||||||
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Other (Loss) Income [Member] | Platinum Warrant [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | |||||||||||
| Amount of gain (loss) recognized on derivatives | $ 3,000 | $ 0 | $ 2,975 | ||||||||
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