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Financial Instruments (Schedule Of Trading Securities Sold, Not Yet Purchased) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Trading securities sold, not yet purchased	$ 39,184	$ 48,740
U.S. Government Agency MBS [Member]
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Trading securities sold, not yet purchased		1,666
U.S. Treasury Securities [Member]
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Trading securities sold, not yet purchased	12,050	15,644
SBA Loans [Member]
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Trading securities sold, not yet purchased		4
Corporate Bonds And Redeemable Preferred Stock [Member]
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Trading securities sold, not yet purchased	25,851	31,406
Municipal Bonds [Member]
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Trading securities sold, not yet purchased	20	20
Derivatives [Member]
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Trading securities sold, not yet purchased	1,181	$ 1,670
Equity Securities [Member]
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Trading securities sold, not yet purchased	$ 82

X

- Definition

Fair value of obligations incurred from short sales.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 940
-SubTopic 320
-Section 35
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=35711043&loc=d3e42429-110968

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- Definition

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+ References

No definition available.

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