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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, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
Segment Reporting Information [Line Items] |  |  |  |
Revenues | $ 318,815 | $ 274,574 | $ 621,201 | $ 546,453
Expenses | 213,561 | 204,078 | 425,856 | 402,410
Operating profit (loss) | 105,254 | 70,496 | 195,345 | 144,043
Gain on sale of subsidiary |  |  | 5,582 | 22,112
Total profit (loss) |  |  | 200,927 | 166,155
Private Banks [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 114,182 | 95,142 | 219,361 | 193,888
Expenses | 98,957 | 97,755 | 199,147 | 194,053
Operating profit (loss) | 15,225 | (2,613) | 20,214 | (165)
Gain on sale of subsidiary |  |  | 5,582 | 22,112
Total profit (loss) |  |  | 25,796 | 21,947
Investment Advisors [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 70,046 | 59,284 | 136,470 | 114,475
Expenses | 35,679 | 32,898 | 70,256 | 64,523
Operating profit (loss) | 34,367 | 26,386 | 66,214 | 49,952
Gain on sale of subsidiary |  |  | 0 | 0
Total profit (loss) |  |  | 66,214 | 49,952
Institutional Investors [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 70,994 | 63,684 | 139,651 | 126,846
Expenses | 35,025 | 33,028 | 69,120 | 64,537
Operating profit (loss) | 35,969 | 30,656 | 70,531 | 62,309
Gain on sale of subsidiary |  |  | 0 | 0
Total profit (loss) |  |  | 70,531 | 62,309
Investment Managers [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 62,451 | 55,456 | 123,459 | 109,276
Expenses | 39,449 | 36,507 | 78,633 | 71,669
Operating profit (loss) | 23,002 | 18,949 | 44,826 | 37,607
Gain on sale of subsidiary |  |  | 0 | 0
Total profit (loss) |  |  | 44,826 | 37,607
Investments In New Businesses [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 1,142 | 1,008 | 2,260 | 1,968
Expenses | 4,451 | 3,890 | 8,700 | 7,628
Operating profit (loss) | (3,309) | (2,882) | (6,440) | (5,660)
Gain on sale of subsidiary |  |  | 0 | 0
Total profit (loss) |  |  | $ (6,440) | $ (5,660)

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- Definition The gain (loss) resulting from the sale of a disposal group that is not a discontinued operation. It is included in income from continuing operations before income taxes in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2443-110228 + Details
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