v2.4.0.8

Financial Assets And Financial Liabilities (Fair Value Table) (Details) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2014 | Dec. 31, 2013 | Jun. 30, 2013
--- | --- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Securities segregated for regulatory purposes | $ 3,427,880 | $ 1,300,016 |
Financial instruments owned | 2,398,625 | 3,285,313 |
Financial instruments owned and pledged as collateral | 839,467 | 1,163,531 |
Total financial instruments owned | 3,238,092 | 4,448,844 |
Other fair value investments, included in other assets | 34,961 | 130,750 |
Total Financial Assets at Fair Value | 6,700,933 | 5,879,610 |
Financial instruments sold but not yet purchased, at fair value | 2,630,785 | 3,153,673 |
Other fair value liabilities, included in accounts payable, accrued expenses and other liabilities | 132,036 |  |
Total Financial Liabilities at Fair Value | 2,762,821 |  |
Common Stock [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financial instruments owned | 1,151,627 | 1,243,971 |
Financial instruments owned and pledged as collateral | 759,705 | 1,097,734 |
Other fair value investments, included in other assets |  | 26,124 |
Financial instruments sold but not yet purchased, at fair value | 1,370,907 | 1,266,432 |
Stocks and options [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Other fair value investments, included in other assets | 33,265 |  |
Other fair value liabilities, included in accounts payable, accrued expenses and other liabilities | 132,036 |  |
Options [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financial instruments owned | 1,072,980 | 1,880,481 |
Financial instruments sold but not yet purchased, at fair value | 1,168,783 | 1,793,248 |
Warrants And Discount Certificates [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financial instruments owned | 34,345 | 57,144 |
Financial instruments sold but not yet purchased, at fair value | 603 | 1,215 |
Warrants [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financial instruments owned and pledged as collateral | 273 | 233 |
U.S. And Foreign Government Securities [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financial instruments owned | 19,915 | 6,743 |
Financial instruments owned and pledged as collateral | 78,012 | 64,439 |
Financial instruments sold but not yet purchased, at fair value | 2,889 | 4,412 |
Corporate And Municipal Bonds [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financial instruments owned | 111,163 | 91,226 |
Financial instruments owned and pledged as collateral | 1,477 | 1,125 |
Other fair value investments, included in other assets | 1,696 | 49,672 |
Financial instruments sold but not yet purchased, at fair value | 87,603 | 87,564 |
Mortgage Backed Securities [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Other fair value investments, included in other assets |  | 26,892 |
Other Asset Backed Securities [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Other fair value investments, included in other assets |  | 22,734 |
Currency Forward Contracts [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financial instruments owned | 8,595 | 5,748 |
Financial instruments sold but not yet purchased, at fair value |  | 802 |
Other Assets - Investments [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Other fair value investments, included in other assets |  | 5,328 |
Level 1 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Securities segregated for regulatory purposes | 3,427,880 | 1,300,016 |
Financial instruments owned | 2,365,984 | 3,258,930 |
Financial instruments owned and pledged as collateral | 839,467 | 1,163,531 |
Total financial instruments owned | 3,205,451 | 4,422,461 |
Other fair value investments, included in other assets | 33,159 | 27,380 |
Total Financial Assets at Fair Value | 6,666,490 | 5,749,857 |
Financial instruments sold but not yet purchased, at fair value | 2,619,103 | 3,138,828 |
Other fair value liabilities, included in accounts payable, accrued expenses and other liabilities | 132,036 |  |
Total Financial Liabilities at Fair Value | 2,751,139 |  |
Level 1 | Common Stock [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financial instruments owned | 1,151,367 | 1,243,914 |
Financial instruments owned and pledged as collateral | 759,705 | 1,097,734 |
Other fair value investments, included in other assets |  | 25,604 |
Financial instruments sold but not yet purchased, at fair value | 1,370,830 | 1,266,429 |
Level 1 | Stocks and options [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Other fair value investments, included in other assets | 33,159 |  |
Other fair value liabilities, included in accounts payable, accrued expenses and other liabilities | 132,036 |  |
Level 1 | Options [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financial instruments owned | 1,072,980 | 1,880,481 |
Financial instruments sold but not yet purchased, at fair value | 1,168,783 | 1,793,248 |
Level 1 | Warrants And Discount Certificates [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financial instruments owned | 34,345 | 57,144 |
Financial instruments sold but not yet purchased, at fair value | 603 | 1,215 |
Level 1 | Warrants [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financial instruments owned and pledged as collateral | 273 | 233 |
Level 1 | U.S. And Foreign Government Securities [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financial instruments owned | 16,049 | 4,641 |
Financial instruments owned and pledged as collateral | 78,012 | 64,439 |
Financial instruments sold but not yet purchased, at fair value | 1,840 |  |
Level 1 | Corporate And Municipal Bonds [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financial instruments owned | 91,243 | 72,750 |
Financial instruments owned and pledged as collateral | 1,477 | 1,125 |
Other fair value investments, included in other assets |  | 1,776 |
Financial instruments sold but not yet purchased, at fair value | 77,047 | 77,936 |
Level 2 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financial instruments owned | 32,381 | 26,326 |
Total financial instruments owned | 32,381 | 26,326 |
Other fair value investments, included in other assets | 1,696 | 103,269 |
Total Financial Assets at Fair Value | 34,077 | 129,595 |
Financial instruments sold but not yet purchased, at fair value | 11,605 | 14,842 |
Total Financial Liabilities at Fair Value | 11,605 |  |
Level 2 | Common Stock [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Other fair value investments, included in other assets |  | 419 |
Level 2 | U.S. And Foreign Government Securities [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financial instruments owned | 3,866 | 2,102 |
Financial instruments sold but not yet purchased, at fair value | 1,049 | 4,412 |
Level 2 | Corporate And Municipal Bonds [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financial instruments owned | 19,920 | 18,476 |
Other fair value investments, included in other assets | 1,696 | 47,896 |
Financial instruments sold but not yet purchased, at fair value | 10,556 | 9,628 |
Level 2 | Mortgage Backed Securities [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Other fair value investments, included in other assets |  | 26,892 |
Level 2 | Other Asset Backed Securities [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Other fair value investments, included in other assets |  | 22,734 |
Level 2 | Currency Forward Contracts [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financial instruments owned | 8,595 | 5,748 |
Financial instruments sold but not yet purchased, at fair value |  | 802 |
Level 2 | Other Assets - Investments [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Other fair value investments, included in other assets |  | 5,328 |
Level 3 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financial instruments owned | 260 | 57 |
Total financial instruments owned | 260 | 57 |
Other fair value investments, included in other assets | 106 | 101 |
Total Financial Assets at Fair Value | 366 | 158 | 0
Financial instruments sold but not yet purchased, at fair value | 77 | 3 | 0
Total Financial Liabilities at Fair Value | 77 |  |
Level 3 | Common Stock [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financial instruments owned | 260 | 57 |
Other fair value investments, included in other assets |  | 101 |
Financial instruments sold but not yet purchased, at fair value | 77 | 3 |
Level 3 | Stocks and options [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Other fair value investments, included in other assets | $ 106 |  |

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