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Collateralized Transactions (Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017
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Securities received as collateral: |  |
Securities borrowed | $ 1,201,721 | $ 1,415,793
Total amounts related to collateralized transactions | 1,201,721 | 1,415,793
Financial instruments owned and pledged |  |
Financial instruments owned and pledged | 610,536 | 595,043
Equities |  |
Financial instruments owned and pledged |  |
Financial instruments owned and pledged | 571,997 | 586,251
U.S. and Non-U.S. government obligations |  |
Financial instruments owned and pledged |  |
Financial instruments owned and pledged | 200 | 99
Exchange traded notes |  |
Financial instruments owned and pledged |  |
Financial instruments owned and pledged | $ 38,339 | $ 8,693

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- Definition The fair value as of the balance sheet date of financial instruments and other positions owned by the entity and pledged to counterparties as collateral, including: (1) mortgages, mortgage-backed and asset backed securities; (2) US government and agency obligations; (3) state and municipal government obligations; (4) other sovereign government debt; (5) corporate obligations; (6) corporate equities; (7) principal investments; (8) derivative contracts; and (9) physical commodities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=64858031&loc=SL6224234-111729 + Details
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- Definition Amount, after the effects of master netting arrangements, of securities borrowed from entities in exchange for collateral. Includes assets not subject to a master netting arrangement and not elected to be offset, at market value. + References No definition available. + Details
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