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Collateralized Transactions (Tables) | 9 Months Ended
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Sep. 30, 2015
Brokers and Dealers [Abstract] |
Schedule of Securities Financing Transactions | The following table presents a disaggregation of the gross obligation by the class of collateral pledged and the remaining contractual maturity of the repurchase agreements and securities loaned transactions as of September 30, 2015:
(Expressed in thousands) |  |  |  |  |
| Overnight and Open |  | Up to 30 Days |  | Total
Repurchase agreements: |  |  |  |  |
U.S. Treasury and agency securities | $ | 867,667 |  |  | $ | — |  |  | $ | 867,667 |
Securities loaned: |  |  |  |  |
Equity securities | 209,125 |  |  | — |  |  | 209,125 |
Gross amount of recognized liabilities for repurchase agreements and securities loaned | $ | 1,076,792 |  |  | $ | — |  |  | $ | 1,076,792 |
Schedule of Gross Amounts and Offsetting Amounts of Reverse Repurchase Agreements, Repurchase Agreements, Securities Borrowed and Securities Lending Transactions | The following tables present the gross amounts and the offsetting amounts of reverse repurchase agreements, repurchase agreements, securities borrowed and securities loaned transactions as of September 30, 2015 and December 31, 2014:
As of September 30, 2015
(Expressed in thousands) |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  |  | Gross Amounts Not Offset on the Balance Sheet |  |
| Gross Amounts of Recognized Assets |  | Gross Amounts Offset in the Balance Sheet |  | Net Amounts of Assets Presented on the Balance Sheet |  | Financial Instruments |  | Cash Collateral Received |  | Net Amount
Reverse repurchase agreements | $ | 404,593 |  |  | $ | (404,593 | ) |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Securities borrowed (1) | 296,362 |  |  | — |  |  | 296,362 |  |  | (291,040 | ) |  | — |  |  | 5,322 |
Total | $ | 700,955 |  |  | $ | (404,593 | ) |  | $ | 296,362 |  |  | $ | (291,040 | ) |  | $ | — |  |  | $ | 5,322 |
(1) | Included in receivable from brokers, dealers and clearing organizations on the condensed consolidated balance sheet.
|  |  |  |  |  |  | Gross Amounts Not Offset on the Balance Sheet |  |
| Gross Amounts of Recognized Liabilities |  | Gross Amounts Offset in the Balance Sheet |  | Net Amounts of Liabilities Presented on the Balance Sheet |  | Financial Instruments |  | Cash Collateral Pledged |  | Net Amount
Repurchase agreements | $ | 867,667 |  |  | $ | (404,593 | ) |  | $ | 463,074 |  |  | $ | (454,495 | ) |  | $ | — |  |  | $ | 8,579 |
Securities loaned (2) | 209,125 |  |  | — |  |  | 209,125 |  |  | (205,458 | ) |  | — |  |  | 3,667 |
Total | $ | 1,076,792 |  |  | $ | (404,593 | ) |  | $ | 672,199 |  |  | $ | (659,953 | ) |  | $ | — |  |  | $ | 12,246 |
(2) | Included in payable to brokers, dealers and clearing organizations on the condensed consolidated balance sheet.
As of December 31, 2014
(Expressed in thousands) |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  |  | Gross Amounts Not Offset on the Balance Sheet |  |
| Gross Amounts of Recognized Assets |  | Gross Amounts Offset in the Balance Sheet |  | Net Amounts of Assets Presented on the Balance Sheet |  | Financial Instruments |  | Cash Collateral Received |  | Net Amount
Reverse repurchase agreements | $ | 314,266 |  |  | $ | (62,660 | ) |  | $ | 251,606 |  |  | $ | (250,000 | ) |  | $ | — |  |  | $ | 1,606 |
Securities borrowed (1) | 242,172 |  |  | — |  |  | 242,172 |  |  | (234,376 | ) |  | — |  |  | 7,796 |
Total | $ | 556,438 |  |  | $ | (62,660 | ) |  | $ | 493,778 |  |  | $ | (484,376 | ) |  | $ | — |  |  | $ | 9,402 |
(1) | Included in receivable from brokers, dealers and clearing organizations on the condensed consolidated balance sheet.
|  |  |  |  |  |  | Gross Amounts Not Offset on the Balance Sheet |  |
| Gross Amounts of Recognized Liabilities |  | Gross Amounts Offset in the Balance Sheet |  | Net Amounts of Liabilities Presented on the Balance Sheet |  | Financial Instruments |  | Cash Collateral Pledged |  | Net Amount
Repurchase agreements | $ | 750,100 |  |  | $ | (62,660 | ) |  | $ | 687,440 |  |  | $ | (686,119 | ) |  | $ | — |  |  | $ | 1,321 |
Securities loaned (2) | 137,892 |  |  | — |  |  | 137,892 |  |  | (132,258 | ) |  | — |  |  | 5,634 |
Total | $ | 887,992 |  |  | $ | (62,660 | ) |  | $ | 825,332 |  |  | $ | (818,377 | ) |  | $ | — |  |  | $ | 6,955 |
(2) | Included in payable to brokers, dealers and clearing organizations on the condensed consolidated balance sheet.

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- Definition Offsetting securities purchased under agreements to resell securities borrowed securities sold under agreements to repurchase securities loaned. + References No definition available. + Details
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- Definition Tabular disclosure of the nature and risks of short-term collateralized financing obtained through repurchase agreements, securities lending transactions and repurchase-to-maturity transactions, accounted for as secured borrowings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=55761124&loc=SL34722452-111729 + Details
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