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Derivative Instruments (Tables) | 3 Months Ended
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Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Schedule of fair value of derivative instruments on a gross basis | The fair value of the Company’s derivative instruments on a gross basis consisted of the following at March 31, 2018 and December 31, 2017:
(in thousands) |  |  |  | March 31, 2018 |  | December 31, 2017
Derivatives Assets |  | Financial Statements Location |  | Fair Value |  | Notional |  | Fair Value |  | Notional
Derivative instruments not designated as hedging instruments: |  |  |  |  |  |  |  |  |  |
Equities futures |  | Receivables from broker dealers and clearing organizations |  | $ | 183 |  |  | $ | 4,836,630 |  |  | $ | (505 | ) |  | $ | 1,985,770 |
Commodity futures |  | Receivables from broker dealers and clearing organizations |  | 39,965 |  |  | 20,971,297 |  |  | 971 |  |  | 21,231,001 |
Currency futures |  | Receivables from broker dealers and clearing organizations |  | 32,042 |  |  | 2,075,544 |  |  | 26,548 |  |  | 3,994,412 |
Fixed income futures |  | Receivables from broker dealers and clearing organizations |  | 23 |  |  | 10,096 |  |  | 73 |  |  | 44,395 |
Options |  | Financial instruments owned |  | 9,210 |  |  | 793,423 |  |  | 7,045 |  |  | 682,369 |
Currency forwards |  | Financial instruments owned |  | 702,889 |  |  | 100,689,302 |  |  | 2,045,487 |  |  | 124,000,221 |
Derivatives Liabilities |  | Financial Statements Location |  | Fair Value |  | Notional |  | Fair Value |  | Notional
Derivative instruments not designated as hedging instruments: |  |  |  |  |  |  |  |  |  |
Equities futures |  | Payables to broker dealers and clearing organizations |  | $ | 208 |  |  | $ | 139,033 |  |  | $ | (575 | ) |  | $ | 142,658 |
Commodity futures |  | Payables to broker dealers and clearing organizations |  | 645 |  |  | 118,427 |  |  | (1,602 | ) |  | 130,042 |
Currency futures |  | Payables to broker dealers and clearing organizations |  | (3,279 | ) |  | 2,531,734 |  |  | (13,947 | ) |  | 7,756,958 |
Fixed income futures |  | Payables to broker dealers and clearing organizations |  | (169 | ) |  | 13,016 |  |  | (1 | ) |  | 2,584 |
Options |  | Financial instruments sold, not yet purchased |  | 15,548 |  |  | 769,273 |  |  | 5,839 |  |  | 681,147 |
Currency forwards |  | Financial instruments sold, not yet purchased |  | 725,058 |  |  | 100,700,387 |  |  | 2,032,017 |  |  | 123,993,234 |
Derivative instruments designated as hedging instruments: |  |  |  |  |  |  |  |  |  |
Currency forwards |  | Financial instruments sold, not yet purchased |  | (364 | ) |  | 15,964 |  |  | (514 | ) |  | 16,115 |
Schedule of net gain from derivative instruments not designated as hedging instruments | The following table summarizes the net gain from derivative instruments not designated as hedging instruments under ASC 815, which are recorded in trading income, net, and from those designated as hedging instrument under ASC 815, which are recorded in accumulated other comprehensive income in the accompanying condensed consolidated statements of comprehensive income for the three months ended March 31, 2018 and 2017.
|  |  |  | March 31,
(in thousands) |  | Financial Statements Location |  | 2018 |  | 2017 |
Derivative instruments not designated as hedging instruments: |  |  |  |  |  |  |
Futures |  | Trading income, net |  | $ | (436,414 | ) |  | $ | 165,590 |  |
Currency forwards |  | Trading income, net |  | 85,910 |  |  | (51,381 | ) |
Options |  | Trading income, net |  | 1,102 |  |  | 1 |  |
|  |  |  | $ | (349,402 | ) |  | $ | 114,210 |  |
Derivative instruments designated as hedging instruments: |  |  |  |  |  |  |
Foreign exchange - forward contract |  | Accumulated other comprehensive income |  | $ | 150 |  |  | $ | — |  |

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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959 + Details
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- Definition Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624163-113959 + Details
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