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Financial Assets And Financial Liabilities (Trading Gains from Market Making Transactions) (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
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Jun. 30, 2013
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| Financial Assets And Financial Liabilities [Abstract] | ||||
| Equities | $ 56,564 | $ 92,992 | $ 151,709 | $ 161,516 |
| Fixed Income | 6,361 | 6,703 | 12,091 | 14,471 |
| Foreign Exchange | 21,095 | (40,677) | 47,732 | (98,002) |
| Commodities | 88 | 115 | ||
| Trading gains | $ 84,020 | $ 59,106 | $ 211,532 | $ 78,100 |