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Summary of Impact of Derivative Financial Instruments to Condensed Consolidated Statements of Operations (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
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Sep. 30, 2014
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Sep. 30, 2013
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Sep. 30, 2014
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Sep. 30, 2013
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| Derivative Financial Instruments [Line Items] | ||||
| Realized Gains (Losses) | $ 7,572 | $ 12,298 | $ 4,470 | $ 7,407 |
| Net Change in Unrealized Gain (Loss) | (6,424) | (13,854) | (27,843) | (11,011) |
|
Freestanding Derivatives | Interest Rate Contracts
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||||
| Derivative Financial Instruments [Line Items] | ||||
| Realized Gains (Losses) | 2,482 | 359 | 1,079 | (596) |
| Net Change in Unrealized Gain (Loss) | (111) | (2,512) | (4,384) | (12,005) |
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Freestanding Derivatives | Foreign Currency Contracts
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| Derivative Financial Instruments [Line Items] | ||||
| Realized Gains (Losses) | 4,327 | 11,847 | 1,346 | 8,084 |
| Net Change in Unrealized Gain (Loss) | (5,253) | (11,553) | (27,197) | 1,083 |
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Freestanding Derivatives | Credit Default Swaps
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| Derivative Financial Instruments [Line Items] | ||||
| Realized Gains (Losses) | 763 | 92 | 2,045 | (81) |
| Net Change in Unrealized Gain (Loss) | $ (1,060) | $ 211 | $ 3,738 | $ (89) |