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Investments In Equity Method Affiliates	12 Months Ended
	Dec. 31, 2015
Investments in Equity Method Affiliates [Abstract]
Investments In Equity Method Affiliates	15. INVESTMENTS IN EQUITY METHOD AFFILIATES As of December 31, 2015 and 2014, the Company had no investments accounted for under the equity method.  The Company has certain equity method affiliates for which it has elected the fair value option. See note 3-F.  Those investees are included as a component of other investments, at fair value in the consolidated balance sheets. All gains and losses (unrealized and realized) from securities classified as other investments, at fair value in the consolidated balance sheets are recorded as a component of principal transactions and other income in the consolidated statements of operations. Equity method accounting requires that the Company record its investment on the consolidated balance sheets and recognize its share of the affiliate’s net income as earnings each year. During the years ended December 31, 2014 and 2013, the Company recognized $27 and $1,828, respectively, of income from equity method affiliates.  All of the investments accounted for under the equity method were either sold or liquidated prior to December 31, 2014.  See note 29 for information regarding transactions with the Company’s equity method investees.

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- References

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- Definition

The entire disclosure for equity method investments and joint ventures. Equity method investments are investments that give the investor the ability to exercise significant influence over the operating and financial policies of an investee. Joint ventures are entities owned and operated by a small group of businesses as a separate and specific business or project for the mutual benefit of the members of the group.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 35
-Paragraph 35
-URI http://asc.fasb.org/extlink&oid=49116238&loc=d3e32847-111569

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 35
-Paragraph 32
-URI http://asc.fasb.org/extlink&oid=49116238&loc=d3e32787-111569

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