v2.4.0.6

Business Segment Information (Schedule Of Financial Information About Business Segments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Segment Reporting Information [Line Items]
Revenues	$ 241,237	$ 237,760	$ 479,135	$ 470,253
Expenses	176,498	173,616	355,540	341,136
Operating profit (loss)	64,739	64,144	123,595	129,117
Operating margin	27.00%	27.00%	26.00%	27.00%
Private Banks [Member]
Segment Reporting Information [Line Items]
Revenues	88,303	87,873	176,291	174,582
Expenses	84,886	86,274	172,403	168,677
Operating profit (loss)	3,417	1,599	3,888	5,905
Operating margin	4.00%	2.00%	2.00%	3.00%
Investment Advisors [Member]
Segment Reporting Information [Line Items]
Revenues	49,375	49,768	98,843	97,876
Expenses	29,025	27,734	58,326	54,774
Operating profit (loss)	20,350	22,034	40,517	43,102
Operating margin	41.00%	44.00%	41.00%	44.00%
Institutional Investors [Member]
Segment Reporting Information [Line Items]
Revenues	55,895	54,731	109,212	107,916
Expenses	28,740	27,406	56,840	54,359
Operating profit (loss)	27,155	27,325	52,372	53,557
Operating margin	49.00%	50.00%	48.00%	50.00%
Investment Managers [Member]
Segment Reporting Information [Line Items]
Revenues	46,713	44,452	92,924	87,893
Expenses	30,163	29,282	60,589	57,281
Operating profit (loss)	16,550	15,170	32,335	30,612
Operating margin	35.00%	34.00%	35.00%	35.00%
Investments In New Businesses [Member]
Segment Reporting Information [Line Items]
Revenues	951	936	1,865	1,986
Expenses	3,684	2,920	7,382	6,045
Operating profit (loss)	$ (2,733)	$ (1,984)	$ (5,517)	$ (4,059)

X

- Definition

Segment Information Operating Income Loss

+ References

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- Definition

Segment Reporting Information Operating Margin Percentage

+ References

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- Definition

Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Excludes Selling, General and Administrative Expense.

+ References

No definition available.

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- Definition

Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 5

-Section 03

-Paragraph 1



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

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